Mostly Unpublished NES Cheats ;)

red    marked cheats are unique, not listed on any site (tell me if not).
brown marked cheats from various other sources like gamefaqs.com etc, checked and fixed if necessary.
gray   marked disabled or missed cheats buried inside game ROM.

  B-Wings
  Babel no Tou
  Baby Boomer
  Back to the Future
  Back to the Future II & III
  Bad Dudes, Bad Dudes vs Dragon Ninja, Dragon Ninja
  Bad News Baseball, Gekitou Stadium!!
  Bakushou! Star Monomane Shitennou
  Bakushou!! Jinsei Gekijou 2
  Banana
  Banana Prince, Bananan Ouji no Daibouken
  Bandit Kings of Ancient China, Suikoden - Tenmei no Chikai
  Bao Xiao Tien Guo (Explosion Sangokushi, Waixing), Shang Gu Shen Jian (Henggedianzi)
  Barbie
  Bard's Tale, The - Tales of the Unknown
  Bard's Tale II, The - The Destiny Knight
  Baseball Simulator 1.000, Choujin - Ultra Baseball
  Baseball Star - Mezase Sankanou!!, Baseball Stars
  Bases Loaded 3, Moe Pro! '90 - Kandou Hen
  Bases Loaded 4, Moe Pro! - Saikyou Hen
  Batman - Return of the Joker, Dynamite Batman
  Batman Returns
  Batsu & Terii
  Battle Baseball
  Battle City
  Battle Fleet
  Battle Formula, Super Spy Hunter
  Battle Stadium - Senbatsu Pro Yakyuu
  Battle of Olympus, The, Olympus no Tatakai
  Battle Storm
  Battleship
  Battletoads
  Battletoads & Double Dragon - The Ultimate Team
  Be-Bop-Highschool - Koukousei Gokuraku Densetsu
  Beauty and the Beast
  Bee 52
  Beetlejuice
  Best Keiba - Derby Stallion
  Best Play Pro Yakyuu
  Best Play Pro Yakyuu '90
  Best Play Pro Yakyuu Special
  Best Play Pro Yakyuu II
  Best of the Best - Championship Karate
  Bible Buffet
  Big Nose Freaks Out
  Big Nose the Caveman
  Bikkuri Nekketsu Shin Kiroku! - Harukanaru Kin Medal, Crash 'n the Boys - Street Challenge
  Bill Elliott's NASCAR Challenge
  Binary Land
  Bing Kuang Ji Dan Zi - Flighty Chicken
  Bio Hazard
  Bio Miracle Bokutte Upa
  Bionic Commando, Hitler no Fukkatsu - Top Secret
  Black Bass 2, The, Black Bass USA, The
  Black Bass, The
  Blaster Master, Chou-Wakusei Senki - MetaFight
  Blodia Land - Puzzle Quest
  Blue Marlin, The
  Blue Shadow, Kage, Shadow of the Ninja
  Blues Brothers, The
  Bo Jackson Baseball
  Bokosuka Wars
  Bomber King, Robo Warrior
  Bomberman
  Bomberman II, Dynablaster
  Bonk's Adventure, FC Genjin - Freakthoropus Computerus
  Booby Kids
  Boogerman
  Boy and His Blob, A - Trouble on Blobolonia, Fushigi na Blobby - Blobania no Kiki
  Bram Stoker's Dracula
  Break Time - The National Pool Tour
  Bucky O'Hare
  Buggy Popper, Bump'n'Jump
  Bugs Bunny Birthday Bash, Bugs Bunny Birthday Blowout, The, Happy Birthday Bugs
  Bugs Bunny Crazy Castle, The, Bugs Bunny Fun House
  Burai Fighter
  Buzz and Waldog (USA), Ko Ko Eo Deu Ben Ce (Korea)

Cheats summary:
generic cheats-27
unique cheats-72
buried secrets-39
fixed generic cheats-22
unverified games-2
games with secrets-77
games with no secrets found-46

B-Wings

(UNI) Level and weapon select (added 31.10.08):
Before triggering one of these cheats you should enable the cheat mode. On controller 1 hold Up then press A, then release Up. Repeat this for Right, Down, Left accordingly, each time holding it, pressing A, then releasing. After this, hold one of the buttons below for according cheat mode then press B. A sound will confirm correct code entry.
Right-Enable stage select.
Press Up or Down to select level. Select "CONTINUE" menu item by pressing Select replaced by "STAGE N" menu item then press Start.
Down-Enable weapon select.
Pause game by pressing Start then by pressing Select choose any weapon.
Left-Enable stage select and weapon select at the same time.

Babel no Tou

(GEN) Babel pro:
At the title screen, press Up, Up, Up, Down, Down, Down, Down, Down, Right, Right, Left.

(BUR) Hidden text (added 19.01.09):
In addition to generic NAMCO copyrights, RESET routine in this game uses string
MR TAKASI FUKAWA
to check if game was soft or hard reset.

(BUR) GameGenie (added 05.02.13):
GENYEIEI-There is a series of the Namco games, made by the same programmers Haruhisa Udagawa and Kumi Hanaoka, that contains the same self-test for the data integrity. To enable any of these tests you need a special device that should be plugged into the expansion port. The operation of that device is very simple. It should accept the data bit from the data input port and return it back inverted to the output data port. The device consists of 4-bit shift register, working as some sort of the FIFO buffer. The input bits are goes to the input and then shifted to te output after a 4 cycles. At the game's boot, it tries to send some special data to the device. If the data output doesn't match the data input inverted, then the game continues the normal operation. But if all data (usually 32, rarely 64 bytes) is matches, self-tests will be performed. The program calculates 24-bit partial checksums for the PRG (excluding the last 8K) and the CHR data, summing only every 15th byte, and comparing it against the etalon. Before testing of the PRG data, the background color turns red, before testing of the CHR data, it turns green. If any of these tests are failed, the program will jump directly to the reset routine. It means, one of these tests will be performed infinitely, but until the special device is plugged in, or until the test are passed. Normally, you'll see the red to green flash just before the game's boot. Or the static red screen if the PRG data is bad, or the flashing from red to green screen if CHR data isn't good. Using this Game Genie code you can skip tests for the special device presence and jump straight to the integrity tests.

Baby Boomer

(UNI) Level skip (added 03.07.13):
Any time during the game, hold Up + A on controller 1, then press B. This will enable the level skip cheat. Now, hold B then press Select on controller 1. Total 10 stages are available, after 10th, you will return back to the stage 1.

Back to the Future

(FIX) Disable music (added 13.02.14):
Pause the game, hold B, then unpause it. To enable music back, just pause / unpause the game without B is held.

(BUR) Hidden text (added 19.01.09):
There is a hidden copyright text in this ROM:
BACK TO THE FUTURE V1.21TVN 3/5/1989, BEAM SOFTWARE


Back to the Future II & III

(GEN) Start at 1875 (Part 3):
At the title screen, hold B then press Select to display the password menu. Enter "FLUXCAPACITORISTHEPOWER" as a password.

Bad Dudes, Bad Dudes vs Dragon Ninja, Dragon Ninja

US version:

(FIX) Extra 64 lives:
Press B, A, Down, Up, Down, Up on controller 2 at the title screen, then press Start on controller 1.

(FIX) Extra punch power:
Enter "64 lives" cheat but don't press Start, now press Up, Up, Down, Down, Left, Right, Left, Right, A, B on controller 2, then press Start on controller 1. Your punch power two times increased.

(GEN) Sound test (added ReyVGM):
After beating game, when last credit's message "data east usa corp." rolls out, American flag at the White House stops flutter. Then press Right, Left, Down, Up, A, A, B on controller 2 to make it flatter again. Press A to hear a music, press any other button then A or Start to return to the main menu.

Japanese version:

(FIX) Extra 64 lives:
Press A, B, Down, Up, Down, Up on controller 2 at the title screen, then press Start on controller 1.
Source: ReyVGM

(FIX) Extra punch power:
Enter "64 lives" cheat but don't press Start, now press Up, Up, Down, Down, Left, Right, Left, Right, B, A on controller 2, then press Start on controller 1. Your punch power two times increased.
Source: ReyVGM

(GEN) Sound test:
After beating game, when last credit's message "data east usa corp." rolls out, American flag at the White House stops flutter. Then press Right, Left, Down, Up, B, B, A on controller 2 to make it flatter again. Press A to hear a music, press any other button then A or Start to return to the main menu.
Source: ReyVGM

Bad News Baseball, Gekitou Stadium!!

(FIX) Play as Girls team (added 13.02.14):
Hold a combination of buttons Up + Down + Left using both controllers (you can press for example Down + Left on controller 1 and Up on controller 2, or Down on controller 1 and Up + Left on controller 2), then press Reset. A heart will appear to confirm correct code entry.

Bakushou! Star Monomane Shitennou

(GEN) Instant win:
Any time during the game hold Select on controller 1 then press Start.
Source: ReyVGM

(UNI) Unknown (added 28.11.08):
Any time during the game press Up + Left + A + B on controller 1. Seems this causes a permanent luck for any player. Need to investigate.

(UNI) Unfinished game (added 13.02.14):
Before the title screen, hold Left + Right on controller 1 then press Start. Start a new game, but instead of begin gameplay, you will continue some unfinished long-played game. Need to investigate.

(UNI) Mini-game mode (added 13.02.14):
Hold Up + Left + A + B on controller 1 and press Reset. Instead of generic game demo loop, you'll see all playable characters in sequence, then will play all mini-games in row until you loose, then return back to the normal game mode. Need to investigate.

(UNI) Slow down the dice roll (added 13.02.14):
During the game, on the second part of the turn, when the letter dice is rolling, hold Left + Right on controller 1 to slow down it, and you can easily select desired dive values.

Bakushou!! Jinsei Gekijou 2

(UNI) Expanded mapper regs check (added 03.07.13):
Hold Up + Down + Left + Right on controller 2, then press Reset. Press A on controller 1 to start a mapper test. If fail (most emulators), the "NG" will be displayed on the red background and game will go to the infinite loop. In other case, the "OK" message will be displayed on the green back for the short time then game will return to the title screen.

(UNI) Sound test (added 03.07.13):
At the title screen, press Up, Down, Up, Down, A, B, Right, Left, Right, Left, Select, Select, A, B, Select, Select, Up, Right, Down, Left, a small number will appear at the bottom-right screen corner. Use Up or Down to change number from 0 to 255, press A to play music (0-31), press B to play sound effects (0-36), press A when number is 255 to enable the microphone test. The rest of the numbers are lead to the program crash.

(BUR) Events test (added 03.07.13):
Set the $304 variable value to $20. During the game press Start or Select to change the number at the top-right corner of the game's HUD. The next move will display only the one event with that number.

Banana

(UNI) Stage select (added 04.07.13):
Start a new game, make three steps down from the starting point, hold A + B on controller 2 then press Reset.
Start a new game again, press A + B on controller 1 to die once, after continue make three steps down from the starting point, hold A + B on controller 2 then press Reset.
Start a new game for the third time, press A + B on controller 1 two times to die twice, after continue make three steps down from the starting point, hold A + B on controller 2 then press Reset.
Finally, start a new game for the fourth time, press A + B on controller 1 two times to die twice, after continue make three steps down from the starting point, press A + B on controller 1 to die for the third time, at the game over screen hold A + B on controller 2.
The game will return to the title screen automatically without a reset. If all done right, the title menus and text color will change from orange to magenta (or blue, if combined with the cheat below).
Now you'll be able to increase or decrease the level counter by 1 instead of 5, just hold A + B on controller 2 and press Left or Right on controller 1.
Additionally you can instantly win the current level by pressing Up on controller 2 during the game, or return back to the previous level by pressing Down on controller 2 during the game. Returning back from the first level will lead you to the stage 0, which is actually an ending.

(UNI) Full items, Extra 8 lives (added 04.07.13):
At the title screen, select the level 101 and start a new game. Press A + B on controller 1 two times to die twice, then press Reset.
At the title screen, select the level 101 and start a new game one more time. Press A + B on controller 1 three times to die three times, then press any button to return back to the title screen automatically.
If done right, the title screen menu text will change from orange to pink (or blue if combined with the cheat above).
Now you can start a new game with maximum 8 lives, and 255 of bombs, ladders, ropes and stones if hold A + B on controller 2 before the game start.
Additionally, before pressing A + B on controller 1 to die, hold A or B on controller 2 to disable lives decreasing.
When using this cheat, when the game is over, your scores will be erased.
This code additionally will return you back to the title screen after completing the last 105th level instead of showing the ending sequence. To view the ending sequence, at the stage 105 complete screen hold Up on controller 2.
Even more secrets are available! You could PLAY the demo stage either. Before the demo sequence start, at the title screen, hold A + B on controller 1 and controller 2 controllers at the same time.

(FIX) Complete a level:
At the title screen, select stage 46, press A + B on controller 1 to commit suicide 3 times until you get a game over and go back to the title screen. Now, select any level, and while playing press Up + A + B on controller 2 to complete the stage. When using this cheat, after the game is over, your score will be erased.
Source: ReyVGM

Banana Prince, Bananan Ouji no Daibouken

(UNI) Debug menu:
Hold Left + A + Select + Start on controller 1 then press Reset.

(GEN) Secret ability:
While playing, hold Down + B for 3 seconds and then immediately press Up + B.
Source: ReyVGM

(BUR) GameGenie (added 14.02.14):
SZVLZTIK+SLVLLVOL-Re-enables some leftover secret message identical to the the "Doki! Doki! Yuuenchi" easter by the same developers. To see it, enter the Debug menu and press B. There is no code to call it in the right way, and althought the 99 lives are added when used this code, they will be overwritten by the debug menu code and just doesn't work.
GEKUVOGK-Re-enables ingame debug handler. Pause the game, press A to change the weapon, press B to max it power. There are more debug variables, but they aren't used in the final game.

(UNI) Password generator:
Level:
Shields:
Weapon:
Password:
Note:0 - full banan
1 - half refined banan
2 - full refined banan
3 - banana peel


Bandit Kings of Ancient China, Suikoden - Tenmei no Chikai

(BUR) GameGenie (added 25.07.17):
POKOTIAP (for the US version)
PONPYIAP (for the Japanese version)
-Re-enables the hidden Debug option (the 17th entry of the main ingame menu). In the US version this menu is untranslated, all corresponding messages are in Japanese too. There are 5 options. First maxes out parameters for currently selected character, the rest is unknown. Need to investigate. One of options glitches in both regional versions.
Source: oldgamehacking.com, tcrf.net

Bao Xiao Tien Guo (Explosion Sangokushi, Waixing), Shang Gu Shen Jian (Henggedianzi)

(GEN) Chapter skip (added 13.02.17):
During the game, press A + B + Start to immediately complete current chapter.

Barbie

(UNI) Secret message (added 17.12.08):
Hold Select, then press Reset, continue holding Select at the initial copyright screen and press quickly A, B, Up, Down, Left, Right, A, B. You must hurry, because this code can be entered only first five second during copyright screen show up. Upper copyright strings will change to "CHRISTINE, ROBERT, SCOTT, VICTOR, JEFFERY WESTEFELD" strings. Release all button and press A + B on controller 1 to return all normal copyrights back.

Bard's Tale, The - Tales of the Unknown

Japanese version:

(GEN) Sound test (added 16.01.14):
At the title screen, hold Up + B + Start and press Start.

Bard's Tale II, The - The Destiny Knight

(UNI) Secret words (added 17.02.14):
Enter one of this words as a player name while creating a new character.
もんすたーもにた-Monster Monitor. Shows you every monster in the game, the last one will stop the program.
えんかうんと-Encounters. The same as previous.
おんかくせれくと-Music Select. Use the D-Pad buttons to select music or sound effects, press A to play SE, music will be played automatically.
いちまいえもにた-Picture Monitor. Shows you every single picture of the place or person in the game.

Baseball Simulator 1.000, Choujin - Ultra Baseball

(BUR) GameGenie (added 06.07.08):
LANNPONY (for the Japanese version)
LANNTONY (for the US version)
-Re-enables a simple memory viewer/patcher cheat. Any time during the game press A + B + Start to enter it, press Select to exit back to the game.
LAXVANNY (for the Japanese version)
LAXVTNNY (for the US version)
-Re-enables a complex debug mode cheat. Hold A + B + Select then press Reset, to enter it, press Select + Start to exit back to the game.

Baseball Star - Mezase Sankanou!!, Baseball Stars

US version:

(FIX) Super team:
Select the "Make Team" option from the main menu. Then press Down, Right, Left, Down, Down, Right. Doesn't matter what team strength you are select after that, so just let it be at the "?" option by default. Press A to enter the team name edit screen. A team name "WHEN ISNT IT?" will be displayed. Change it to "WHEN IT IS." including punctuation, then select "END" and now enter a real team name. Complete the team making procedure. Now, team you've created has a lot more power than any other teams.

(FIX) Women's team:
Select the "Make Team" option from the main menu. Now, move the cursor to the "Veterans" strength option, then select any other option. Repeat selecting and deselecting the "Veterans" three more times, so this should be a 4 times in total you've selected this option. You can now select any other than "Veterans" strenght to your new team, just don't select the "Veterans" option anymore. Press A to enter the team name edit screen. A team name "WHAT IS A WREN?" will be displayed. Change it to "A BIRD." including punctuation, then select "END" and now enter a real team name. Complete the team making procedure. Now, team you've created will be consists of woman instead of men.

(FIX) Super women's team:
Combining two cheats above will give you the Super women's team after all. First you need to enter the Super team cheat sequence. Note, that while you doing this, you've selected the "Veterans" team once already. When done, do the same procedure as in the second cheat of selecting deselecting the "Veterans" option 3 more times. Press A to enter the team name edit screen. First you'll be asked "WHAT IS A WREN?", write a correct answer, select "END", then you'll be asked "WHEN ISNT IT?", write a correct answer one more time, then you'll be finally asked about the real team name. When you complete the team making, you'll obtain a Women's team with maxed out parameters.

Japanese version:

(UNI) Super team (added 17.12.13):
Select the "チームつくり" option from the main menu. Then press Down, Right, Left, Down, Down, Right. Doesn't matter what team strength you are select after that, so just let it be at the "バラバラ" option by default. Press A to enter the team name edit screen. A team name "すとくいんの しものくは" will be displayed. Change it to "われてもすえに あわむとぞおもふ", then select "おわり" and now enter a real team name. Complete the team making procedure. Now, team you've created has a lot more power than any other teams.

(UNI) Women's team (added 17.12.13):
Select the "チームつくり" option from the main menu. Now, move the cursor to the "Veterans" strength option, then select any other option. Repeat selecting and deselecting the "Veterans" three more times, so this should be a 4 times in total you've selected this option. You can now select any other than "Veterans" strenght to your new team, just don't select the "Veterans" option anymore. Press A to enter the team name edit screen. A team name "おののこまちの しものくは" will be displayed. Change it to "わがみよにふる ながめせしまに", then select "おわり" and now enter a real team name. Complete the team making procedure. Now, team you've created will be consists of woman instead of men.

(UNI) Super women's team (added 17.12.13):
Combining two cheats above will give you the Super women's team after all. First you need to enter the Super team cheat sequence. Note, that while you doing this, you've selected the "Veterans" team once already. When done, do the same procedure as in the second cheat of selecting deselecting the "Veterans" option 3 more times. Press A to enter the team name edit screen. First you'll be asked "おののこまちの しものくは", write the correct answer, select "おわり", then you'll be asked "すとくいんの しものくは" write correct answer one more time, then you'll be finally asked about the real team name. When you complete the team making, you'll obtain a Women's team with maxed out parameters.

Bases Loaded 3, Moe Pro! '90 - Kandou Hen

(UNI) Unknown (added 06.07.13):
Hold A + B then press Reset. The meaning isn't clear. The cheat flag used for select from two different data sets and two code handlers while moving on the field and bating.

Bases Loaded 4, Moe Pro! - Saikyou Hen

US version:

(FIX) Music test:
At the title screen, enter the "PLAY" option, then hold A + B on controller 2 and the press Start or A on controller 1 to get to a sound test screen. The same code at the title screen without entering the "PLAY" option works the same as entering "OPTIONS", no matter what manu option is selected.

Japanese version:

(FIX) Music test (added 18.02.14):
At the title screen, do not enter any menu options, hold A + B on controller 2 and the press Start on controller 1 to get to a sound test screen. This code is unlockable and given to you by one of the ending staff messages, which is absend from the US version.

Batman - Return of the Joker, Dynamite Batman

(GEN) Sound test:
At the title screen, hold A + Start.

Batman Returns

(FIX) Ending easter 1 (added 22.07.15):
During the ending's staff sequence, hold Start on controller 1 to make one of two characters running at the bottom of the screen. The character type depends on your ending type: for two good endings this is a stage 2-3 boss Catwoman, for two bad endings this is a stage 1-2 boss.

(GEN) Ending easter 2 (added 22.07.15):
After the ending sequence is over and copyright message appears, press either A or B on controller 1 to animate the penguin.

(UNI) Repeat ending sequence (added 25.06.08):
After the ending sequence is over and copyright message appears, press Left + A + B on controller 2.

(UNI) Extra batarangs (added 23.07.15):
During some cutscenes between levels, hold Start on controller 1 and A + B on controller 2 at the same time and press Select on controller 1 to skip the cutscene or just wait to cutscene is over. If done right, you'll start a new stage with 10 batarangs instead of 5. This cheat isn't working at the intro cutscene before stage 1-1. Also, you can use this cheat at the cutscene before stage 4-1, but there are no batarangs used in a car driving sequence, so this will help only in the next regular fighting stage.

(BUR) Copyrights check (added 23.07.15):
As most games by Konami made after 1991 year, this game contains some simple copy protection. During the game, there are two particular places, where the protection checks is performed. The first one occurs at stage 2-3 during the battle on the Ivory Tower, where it constantly check for the presence of the part of the title name data. The second one performed at the second part of stage 2-2, once when a helicopter bomber enemy appears on the screen and checks for Konami logo tilemap in the PRG-ROM. If one of these tests fails, the special protection flag is raised. There are two main effects triggered. First, at the stage 3-1, it will change its state so if you had already recorded the Penguin's conversation, but the flag for this event isn't raised at the same time, renders this level unbeatable. Second, any correctly generated passwords obtained after protection is triggered (even after the game over and beginning of the new game), will fail at the password entry screen. This flag only will reset if you enter the clean password or reset the system.

(UNI) Password generator (added 22.07.15):
Some notes about the password system and the game itself:
1. Stage 6-1 doesn't generate any passwords normally during the game, because there is no fatal events on it, you just can't die there. But you still able to get to this stage with the custom generated password.
2. The "Damage taken" counter is what you've got every time you get a hit from enemy or die. Regular hits add 8 times of the hit power value to this counter, the game over add 1024 instantly. The amount of continues you may use is unlimited, but the more you die or get hits, the bigger the damage counter. There are two main effects depends on it:
 a) the amount of HP you got refilled after continue; calculated as 0x28+(damage/128), but not much than your current HP capacity
 b) the different endings; less damage counter, more detailed the ending
 There are total 4 ending variants. Two are the good ones, two are the bad.
  1. The damage counter above 14848: only the staff roll with the stage 1-2 boss easter and the final message "YOU TOOK TOO MUCH TIME TO GET HERE. TRY GETTING HERE SOONER."
  2. The damage counter between 14848 and 9984: additional bat signal screen before the staff, the same stage 1-2 easter and the message "YOUR SKILL HAS IMPROVED, BUT YOU'RE NOT A REAL HERO YET."
  3. The damage counter between 9984 and 5376: the full demo sequence with the scene of the Penguin death, following the bat signal and staff roll with stage 2-3 boss Catwoman easter instead, and the message is "CONGRATULATIONS! BATMAN,YOU'VE SAVED GOTHAM CITY."
  4. The damage counter less than 5376: additionally a Catwoman picture appears on the bat signal screen, and the final message is "AWESOME! YOU ARE THE HERO OF ALL HEROES."
3. The "Game start" flag is used to determine if you access the password menu after the game over screen or you just powered up the console. Depends on it will or not clear some game variables. This prevents the game parameters and flags from erasing between game plays, and even if you choose "END" at the game overs screen, you can always go to the password menu and enter the default generated passwords (which is the same as on the game over screen) and continue the game. However, this flag is set to 1 ALWAYS when you start a new game or continue one way or another, it's is only has value 0 before the first game play after the reset. So technically, every password generated by the game after the game is started has this flag set, and only 4 random default passwords generated after the game reset, has this flag clear. When you generate any valid password, doesn't matter if you set this bit or not.
4. The "Test tube" flag is a special item, not displayed on HUD, but you can obtain it on stage 2-2 inside the cat's eye on the background after beating two trident armed enemies. Used automatically on the stage 2-3 boss Catwoman, cuts its HP by half.
5. The "Conversation" flag is set when you record the Penguins conversation in one of the rooms of the stage 3-1. This will change the level layout and allows you to complete it. You can't avoid setting this flag during the normal game, generated passwords with this flag set lead to the second part of the stage.
6. Also there is a special anti-pirate flag, if set, it makes any valid passwords not working. Here this flag is forced to be disabled for obvious reason.
7. There are two special debug flags, that can't be set during the game, and may be only generated. The invulnerability flag disables the HP decreasing. The Level Select flag is another debug leftover, allows you any time during the game, except the cutscenes, change current stage up to stage 4-2 instantly by pressing Left or Right on controller 2. The stages above 4-2 can't be accessed with this cheat.
8. "Box in hand" and "Box filled" are represents the special HP storage item. First is for amount of this items in your posession (given to you instantly after the stage 1-2 boss, the rest are hidden at some places). The second is amount of filled ones with HP. Actual HP counter in this game is 8-bit in size, so can contain as much as 255 HP. Only 64 HP is displayed in the HP bar on HUD, this takes only 6 lower bits of the number. When calculating your HP, the game will check for amount of boxes in posession and fills the higher two bits of the HP depending on it. So normally during the game you can't get the HP counter more than 64+(box*64) value. However, game doesn't check this when you lose your HP and decreasing it as if it full 8-bit value, so with this password generator, you can set "Hitpoints" + "Box filled" vealues to maximum to get 255 HP ingame without posessing the boxes at all. Unfortunately, the HP will be dropped back to 64 after the first continue.
9. And finally, there are two unused bits in passwords, that can be used for unique passwords generation, but doesn't appears to have any effects during the game.
Level:Game start :
Random:Test tube:
Hitpoints:Conversation:
Damage taken:Invulnerability:
Box in hand:Level Select:
Box filled:Unused:
password:


Batsu & Terii

(UNI) Level select:
At the title screen, press Up, Down, Left, Right, Up, Down, Left, Right on controller 2 then select desired level (only worlds 1, 2, 5, 6 are available) by pressing B on controller 2 corresponding number of times, then start the game:
1 time-World 1, Level 2
2 times-World 1, Level 3
3 times-World 1, Level 4
4 times-World 2, Level 1
5 times-World 2, Level 2
6 times-World 2, Level 3
7 times-World 2, Level 4
16 times-World 5, Level 1
17 times-World 5, Level 2
18 times-World 5, Level 3
19 times-World 5, Level 4
20 times-World 6, Level 1
21 times-World 6, Level 2
22 times-World 6, Level 3
23 times-World 6, Level 4

(UNI) Extra 5 health:
At the title screen, press Left, Left, Left, Left, Right, Right, Right, Right, Left, Left, Left, Left, Right, Right, Right, Right on controller 2 then start the game.

(UNI) Extra weapon:
At the title screen, press A, Up, B, Up, A, Down, B, Down, A, Left, B, Left, A, Right, B, Right on controller 2 then start the game.

(UNI) Extra 99 hearts:
At the title screen, press Up, Up, Up, Up, Right, Right, Right, Right, Left, Left, Left, Left, Down, Down, Down, Down on controller 2 then start the game.

(UNI) Extra 30 seconds:
At the title screen, press A, Up, Left, Left, B, A, Right, Down, Right, Left, Right, Up, A, Down, A, Up on controller 2 then start the game.

(UNI) Extra 99 lives:
At the title screen, press A, A, B, A, B, B, A, B, B, B, B, B, A + B, A + B, A + B, A + B on controller 2 then start the game.

Battle Baseball

(UNI) Sound test:
Hold Up + A + B + Start when "Banpresto" logo appears.

(GEN) The Final Team:
At the game menu, select the top option, then select the 1st or 3rd option. Pick your team and play a game (or let the computer play them, it's way faster). After finishing a game, you'll see a news anchor giving the results of the games. On the very last message he gives, press A + B on controller 2 until the Hero All Stars Team challenges you.
Source: ReyVGM

(GEN) The Same Team:
At the menu screen, choose the lower left option, then Vs Game. Now, while choosing your team, hold Select + Start on controller 1 and you'll be able to chose the same team as your opponent.
Source: ReyVGM

Battle City

Console version:

(UNI) Secret message (added 23.04.07):
At the title screen, select "construction" menu item then press Start on controller 1 to enter this mode and again Start to return back to the title screen. Repeat this 7 times. After that hold Down on controller 1 and press A on controller 2 8 times. Finally, hold Right on controller 1 then press B on controller 2 12 times. Press Start on controller 1. Message "THIS PROGRAM WAS WRITTEN BY OPEN-REACH WHO LOVES NORIKO" appears.

(BUR) GameGenie (added 23.03.08):
IIOKYXAZ-Enable in-game debugging routine allow you to view memory data. Press B or Select to change address in Zero memory page. Pressing to A should been increase address to $10 but as side effect of this GG code it causes end of stage. Some hex letters was overwritten with other data in final release, so numbers with "a", "b", "c", "d" letters cannot be displayed properly.
Source: Griever

(BUR) Hidden text:
COPYRIGHT 1981 1985 NAMCO LTD.
ALL RIGHTS RESERVED
RYOUITI OOKUBO
TAKEFUMI HYOUDOU
JUNKO OZAWA


(BUR) Hidden text:
At the end of PRG-ROM lies some small ASCII like art with 6 kanji combined in two groups by 3 kanji - two small at the top, one large at the bottom of each group. Kanjis means some words: "大久保" ("Ookubo") and "宇田川" ("Utakawa"). First one is Last name of game programmer, second one - street name it Tokyo, where just now opened entertainment complex "NAMCO INTI SHIBUYA". Back in 1985 year there was small developer company "TomCat System" where Ookubo Ryouiti was working and who develop "Battle City" game for NAMCO company.

Arcade version:

(UNI) Stage select (added 21.11.08):
Insert credit then hold A + B on controller 2 and press Start on controller 1. You must choose desired level in 10 seconds.

Battle Fleet

(BUR) GameGenie (added 05.02.13):
GEXVLAEI-Some of the Namco games, which uses the 19 mapper PCB, contains also the specific self-test routine. It can test and initialize the internal RAM buffers. Similar to the other Namco games series, in order to run these tests, you must plug in a special device to the famicom expansion port. This device is much simpler than mentioned another device. It just takes one bit of data and immediately returns it inverted to the data port, there is no FIFOs inside. When the program detects the device presence, it performs RAM test and initialization. If RAM is already tested/initialized, the screen will turn blue. If RAM isn't initialized, but after init and test all is fine, then screen will turn yellow or pink. If, even after the reinitialization, RAM test fails, then screen will turn red. After the tests, program goes to the infinite loop, so yo must unplug special device to boot into the game. Using this Game Genie code you can skip the special device check and just directly to the RAM initialization routine. This game tests it's IRAM buffer, used for the expansion sound.

Battle Formula, Super Spy Hunter

(GEN) Hyper tennis:
After the game over screen, put cursor to the CONTINUE option, then press A 8 times to put turrets on it straight down and then press Start. You may play with second player or with CPU. Defeat CPU to continue game play with 20 extra lives.

(FIX) Full equipment:
Pause the game, then press Up, Up, B, Right, Right, B, Down, B, Down, B, Left, Left, A.

(FIX) Extra lives (added 18.02.14):
Hold Select and press Start at the title screen. Various numbers will appear on the screen. The number that remains on the screen indicates the number of lives available at the game start, up to twelve lives.

(UNI) Anti continue (added 18.02.14):
Normally, continues in this game are unlimited. For some unknown reason, you can limit it with maximum 80 continues. Just before the title screen is show up (during the game boot or after selecting the "END" option at the game over screen), hold Start. Start a new game, and after exactly 80 continues you'll be returned back to the title screen immediately after the game over screen.

Battle Stadium - Senbatsu Pro Yakyuu

(UNI) Debug mode:
At the main game menu, select the bottom-right ("power off") option, when "oyasumi..." ("good night") message appears on the screen, press Up, Up, Down, Down, Right, Left, Right, Left, A, B, Start.

(UNI) Second player time out (added 19.02.14):
Usually, during the game the second player couldn't pause it and change the game settings, just like it can be done by the first player. To enable the ability to the second player to pause the game, on controller 1 hold A + B, then press Reset. Now during the game, if the second player will shout to the internal microphone on controller 2 for a one or two seconds constantly, the pause will be triggered.

(BUR) GameGenie (added 19.02.14):
PGONLLPK+EYONGLEI-Re-enables more hidden options in the debug menu as well as simple Debug Mode access cheat. To get to Debug Menu, just hold A then press Reset. Previously unused options in the Debug Menu now can be used. Need investigate, what exactly they do. Some of them are writing some signatures to the SRAM, some toggles unknown flags, seems unused now.
The game is checking if game in full debug mode or not by checking SRAM signature. In the release version it is "IGS", but for the debug version it should be "ALF". This game genie code just fool the debug signature check.

Battle of Olympus, The, Olympus no Tatakai

USA version:

(BUR) Hidden text (added 06.07.16):
There is a hidden text at the end of the ROM:
BB47956-15440


Battle Storm

(UNI) Ending sequence:
At the title screen, press Up, Left, Down, Right, A, B.

(UNI) Sound test (added 19.02.14):
At the title screen, press Up + Left + B + Select.

(UNI) Super challenge 1 (added 19.02.14):
Enter the Sound Test mode. Point the cursor to the music called "THE CHALLENGE" and press Right + Select + Start.

(UNI) Super challenge 2 (added 19.02.14):
Enter the Sound Test mode. Point the cursor to the music called "THE CHALLENGE" and press Left + Select + Start.

(UNI) CPU vs CPU (added 19.02.14):
During the game, press Start to pause it. Press Down + Left + B + Select. Select with Up or Down the player control mode "COMPT" to give the control of your side to the computer, now two computerw sill fight each other. Select "HUMAN" to return the controls to the human back again. This cheat can't be done in two player mode and the Challenge battles mentioned above.

Battleship

(UNI) Secret passwords:
0914-Unlimited weapons
0528-Shows enemy grid after the player's grid when push Start

(UNI) Sound test (added 19.02.14):
At the title screen, press Select on controller 2 to cycle the background music from the whole game.

Battletoads

(GEN) Extra 5 lives:
Hold Down + A + B and press Start at the title screen or continue screen on any controller (both players can get the extra lives). An explosion will confirm correct code entry.

Battletoads & Double Dragon - The Ultimate Team

(FIX) Extra lives:
Hold Up + A + B and press Start at the player selection screen or continue screen on any controller. (both players can get the extra lives).

(UNI) Warp zone Extra 5 Lives:
Press B, A, Down, B, Up, Down ot the player selection screen. A sound will confirm correct code entry. Press Start to enter Level selection menu up to 5-2 level and you'll start with extra 5 lives.

(GEN) Super Warp zone Extra 10 Lives:
Press Down, Up, Up, Down, A, B, B, A at the player selection screen. A sound will confirm correct code entry. Press Start to enter Level selection menu up to 7-1 level and you'll start with extra 10 lives.

Be-Bop-Highschool - Koukousei Gokuraku Densetsu

(UNI) Ending easter (added 27.02.17):
Beat the game for the Good ending (under 8 days as Nakama Tooru or under 9 days as Katou Hiroshi). While the very first exclamation line before the Staff roll ("んがっ") displayed on the screen, quickly press A, B, Down, Up, Down, Up. At the "終" ("The End") screen, the main character instead of still smiling face will show you a grin with a fig.

Beauty and the Beast

(BUR) Hidden text (added 16.11.08):
There is a hidden copyright message in ROM:
beauty and the beast music and soundeffects (c) 1993 jeroen tel / maniacs of noise


Bee 52

(FIX) Cheat mode (added 20.02.14):
At the splash screen with Bee, before the stage number screen or the level restarting, enter one of the following button sequences then press Start to apply corresponding effect. The message "cheat!" will appear at the bottom of the screen to confirm correct code entry.
A, Up, Down, Left, Right-Extra 5 Lives (available only before the stage screen)
B, Up, Up, Up, Right-Level 5 (available only before the stage screen)
Select, B, B, B, Left-Level 9 (available only before the stage screen)
Up, Up, B, A, B, A-Do not clear powerups and items after death (useful only after death)
Down, Down, Up, Up-Water can't dodge you back (available at any splash screen, need to be reentered any time after death)
Left, Left, Right, Left, A-Level 13, Enables gravity (available only before the stage screen)
Right, A, B, A, B-Junior bee option, twice the weapon power, and defends from the instant death once (available at any splash screen, can be reentered after death)

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Beetlejuice

(BUR) Hidden text (added 17.11.08):
There is hidden copyright text in ROM:
* Written by Paul Machacek *


Best Keiba - Derby Stallion

(GEN) Sound and CHR test:
At the title screen, hold Right on controller 2 and press Start on controller 1.
Source: ReyVGM

(UNI) Horse stats (added 21.02.14):
During the game, in the stables, select any horse from the left part of the field, then on the info screen hold Right + B on controller 2 and press A on controller 1 to see all numerical parameters of the selected horse.

(UNI) Ending sequence (added 21.02.14):
At the title screen, while demo race is in progress, hold Up + B on controller 2 and wait for the end of the race.

Best Play Pro Yakyuu

(UNI) Debug menu:
Choose first option at the main game menu ("リーグデータ" or "league data") then select 2nd team name, press A, then edit it to そのべ and return to main menu by pressing B twice. Press Select, Right, Left and menu will appear. You can listen game music and view ending and other sequences.

(UNI) SRAM clear (added 22.02.14):
Before the powering the console on, hold A + Select.

(UNI) Autoplay mode (added 22.02.14):
Start a new game with two CPU controlled players. At the team presentation screen press A + Select. The message "AUTOPLAY" will appear. This will change some internal CPU behaviour, while playing agains each other. Need investigate.

Best Play Pro Yakyuu '90

(UNI) Debug menu:
Choose first option at the main menu ("リーグデータ" or "league data") then select 2nd team name and edit it to the そのべ (to enter edit mode, press A at the team name, then move cursor Up and again press A, edit name, press B to exit edit mode), return by pressing B to main menu and choose second option at the main menu ("日程表" or "にっていひょう" or "shedule"), move cursor down 13 times to set blue bar to the next to last position. Then return to main menu again and press Start at the currently selected menu option. You'll be able to hear the music, view ending and other sequences and edit custom sounds with sound editor.

Best Play Pro Yakyuu Special

(UNI) Debug menu:
Choose first option at the main game menu ("リーグデータ" or "league data"), select any league then select 2nd team name and edit it to そのべ (to enter edit mode, press A at the team name, then move cursor Up and again press A, edit name, press B to exit edit mode), return by pressing B to main menu and choose second option at the main menu ("日程表" or "にっていひょう" or "shedule"), move cursor down 12 times to set blue bar to the next to last position. Then return to main menu again and press Select at the currently selected menu option. You'll be able to hear the music, view some winning sequences and edit custom sounds with sound editor.

Best Play Pro Yakyuu II

(UNI) Debug menu:
Choose first option at the main game menu ("リーグデータ" or "league data") then select 2nd team name and edit it to そのべ (to enter edit mode, press A at the team name, then move cursor Up and again press A, edit name, press B to exit edit mode). After that, select 5th team name and change it to すだぴん the same way. Return to the main menu, point cursor to second option at the main menu ("日程表" or "にっていひょう" or "shedule") and press Start. You'll be able to hear the music, view ending and other sequences and edit custom sounds with sound editor.

Best of the Best - Championship Karate

(UNI) Secret words (added 17.11.08):
Enter one of following words as first player name. Note: there is two spaces before and three spaces after words in name.
"  LAYER   "-Your opponent health level down from 255 to 10.
"  OLRAC   "-Secret copyright message: "Conversion on NES by Movie Software (Perconti Carlo) Fax number: 33 1 60084528".

Bible Buffet

(BUR) GameGenie (added 21.03.11):
ELEPNYUX+VZEOENEZ-Re-enables Sound Test mode from another Wisdom Tree game - "Spiritual Warfare", just press Reset.

Big Nose Freaks Out

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Big Nose the Caveman

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

(UNI) Hidden credits (added 22.02.14):
At the Codemasters logo hold A + B + Select + Start before the title screen appears. Instead you'll see a hidden credits.

(BUR) GameGenie (added 25.04.14):
PAUGTAAA-Re-enables the Stage Select after selecting of the one or two player mode.
PAUGYAAA-Re-enables the Infinite lives debug feature
PAUKAAAA-Re-enables the Free shop debug feature
AAUKPAPA-Switches the game to the "Galoob" publisher mode with different logos and copyrights.
Source: tcrf.net

Bikkuri Nekketsu Shin Kiroku! - Harukanaru Kin Medal, Crash 'n the Boys - Street Challenge

(BUR) Hidden text (added 16.12.07):
There is some hidden text list present. String index only initialized by 0 at the game start, and nothing seems points to strings output routine. Cheat seems to be totally disabled.
00004560: 00 00 00 C1 00 C1 00 C1 00 00 23 18 1F 20 00 00 000.0.0.00SHOP00
00004570: 00 00 20 1E 1F 00 24 15 23 24 23 1E 14 00 24 15 00PNO0TESTSND0TE
00004580: 23 24 23 29 1F 1B 25 23 29 25 12 11 13 1B 24 15 STSYOKUSYUBACKTE


Bill Elliott's NASCAR Challenge

(UNI) Easter egg (added 27.12.12):
During the game demo sequence, when DSI logo and credits are displaying, hold Up and wait about 10 seconds, then while still holding Up press A, B, Start, Select, Select, Start, B, A. A screen with the DSI developer's photos will be displayed.

(UNI) Skip cutscene (added 22.02.14):
A "Drivers, start your engines!" cutscene may be skipped by pressing Up + A + B at the same time.

Binary Land

(GEN) Hi-score record:
If your score is higher than 30000 pts, press Select after you die - you will be able to enter your name on the list of the best scores.

(FIX) Continue:
After the game over screen, hold at the title screen A or B or both at the same time and press Start.

(GEN) Love story:
Hold on both controller 1 and controller 2 at the same time A + B, then press Reset to switch game to "Love story" mode. Title screen changed to "KIKU. MEGU. LOVE STORY" and when one of penguins will be hit by enemy it will be crying name of another penguin. "KIKU" is a programmer of HUDSON Kikuta Masaaki (菊田昌昭. He put secret codes with messages almost in all his games under HUDSON label.

Bing Kuang Ji Dan Zi - Flighty Chicken

(BUR) GameGenie (added 23.02.14):
XTETAAAV-Displays the game variables and timers during the game play.

Bio Hazard

(UNI) Earter egg (added 08.07.13):
During the game, press Up, Up, Down, Down, Left, Left, Right, Right, A. A message with the full company name ("Computer Technology Co., Ltd. Fuzhou Waixing") will appear.

Bio Miracle Bokutte Upa

(GEN) Level select:
At the title screen, hold Up + A on controller 1 and Down + B on controller 2 at the same time. Now press Select on controller 1, then release all buttons.

(BUR) No Damage:
RAM variable $1C set to 1 instead 0, then message "NO DAMAGE" appears at the stage number screen. No other noticeable differences.

Bionic Commando, Hitler no Fukkatsu - Top Secret

(GEN) Level exit:
During regular "left-to-right" levels, hold A + B then press Start. This won't work for the "bottom-to-top" levels.

(UNI) All weapons (added 11.02.16):
In the Japanese version, go to the interrogation room in level 17 and beat the prisoner 255 times, so he gives to you all weapons from the game.
Source: tcrf.net

Black Bass 2, The, Black Bass USA, The

All versions:

(BUR) Hidden text (added 23.11.08):
There is a hidden copyright text in ROM:
1988. Another Ltd. to YOSHIKAWA
1988. Another Ltd. Ver.


US version:

(GEN) Secret words (added 16.01.14):
HBMAX-Attractive Bait Meter

Japanese version:

(UNI) Secret words (added 23.02.14):
MIRUN-Attractive Bait Meter

Black Bass, The

(BUR) Hidden text (added 23.11.08):
The RESET routine in this game uses string
NAOKI
to check if game was soft or hard reset.

(BUR) Hidden text (added 23.11.08):
There is a hidden copyright text in ROM:
1986ANOTHERltd.


Blaster Master, Chou-Wakusei Senki - MetaFight

US version:

(BUR) GameGenie (added 04.12.08):
XTVYGGAV-There were Stage select mode at the development stage. The Japanese version contain it full functional, but the US version have critical JSR opcode removed, so it is impossible hack it back only with some bytes. This cheat just allow to view Stage select mode, but didn't allow to play at all.
GAUGIKGK-Enable debug features. While in game, level edit mode (Up on controller 2) not working. Use A and B on controller 2 to increase weapon power and stuff.

Japanese version:

(BUR) GameGenie (added 04.12.08):
EKNYUYAA-Enable debug features. You can select any level after starting a new game. While in game, press Up on controller 2 to move to any level coordinates, there was level editor or something else as well at the development stage with extra RAM at $7000-$7FFF area. Use A and B on controller 2 to increase weapon power and stuff.

Prototype version:

(BUR) GameGenie (added 04.12.08):
GAXKPKGK-Enable debug features. While in game, level edit mode (Up on controller 2) not working. Use A and B on controller 2 to increase weapon power and stuff.

Blodia Land - Puzzle Quest

(UNI) Stage and level skip (added 10.07.13):
Hold A + B on controller 1 and controller 2 at the same time then press Reset. Press B while in map mode to change the stage. Press Up or Down while on level to change the current level. Press A to play selected level.

Blue Marlin, The

(GEN) Sound test:
Hold Select + Start then press Reset.

(BUR) Hidden text (added 05.10.08):
The RESET routine in this game uses string
MEGUMI.MY.LOVE
to check if game was soft or hard reset.

Blue Shadow, Kage, Shadow of the Ninja

(FIX) Cheat mode:
Press A, A, A, A, B, B, B, B, A, B, A, B, A, B, A, B after selecting the number of players at the title screen. A sound will confirm correct code entry. Hold one of the following button combinations, then press Start on controller 1. To start with invulnerability, hold Down on controller 2 in addition to the other buttons.
B on controller 2-Level 1-2
A on controller 2-Level 1-3
A + B on controller 2-Level 1-4
B on controller 1-Level 2-1
B on controller 1, B on controller 2-Level 2-2
B on controller 1, A on controller 2-Level 2-3
B on controller 1, A + B on controller 2-Level 3-1
A on controller 1-Level 3-2
A on controller 1, B on controller 2-Level 3-3
A on controller 1, A on controller 2-Level 4-1
A on controller 1, A + B on controller 2-Level 4-2
A + B on controller 1-Level 4-3
A + B on controller 1, B on controller 2-Level 5-1
A + B on controller 1, A on controller 2-Level 5-2
A + B on controllers 1 and 2-Sound test

Blues Brothers, The

(UNI) Level skip (added 05.10.07):
Any time in the game press on controller 2 Down + Left + A + B + Select + Start and the same time press Up + Right + A + B + Select + Start on controller 1. This will enable level skip feature. To skip level press A + B + Select + Start on any controllers, input from both controllers merges into one button combination.

Bo Jackson Baseball

(GEN) All-Bo Jackson team:
Select any team, select a CPU opponent and press A, then press Left + B + Select at the team roster screen. Bo Jackson will appear in every position on the roster.

(GEN) Get Bo Jackson:
Select Chicago as a team, select a CPU opponent and press A, then press Up + Select at the team roster screen to place Bo Jackson as your central fielder.

Bokosuka Wars

(UNI) Higher level (added 23.02.14):
Hold Select + Start then press Reset. Immediately after reset, start shouting to the microphone until the title music starts. If done right, you can start a new game with some altered parameters of your character (K320), so you can fight without loose.

Bomber King, Robo Warrior

All versions:

(FIX) Cheat mode (added 08.01.14):
To enable a cheat mode you must meet a couple of requirements. First one is to play the game at least a couple of minutes, to be more specific: at least for one background music loop, the cheat won't trigger before that. The second one is the last killed enemy should be Lurker (grey enemy that fires powerful missiles), doesn't matter when or how you kill it, just don't kill anyone after that, or you need to find another Lurker. The third reuirement is the power meter and the energy tanks should be full. As soon as power meter drained very quickly, the best time to do a trick is right after using the Energy Tank item, so keep it until now and equip before you going to enable this cheat. Fourth reuirement is to have exactly 62 bombs, it's easy. And finally fifth requirement is to face the player to south. So, now to do a trick you must collect 62 bombs, kill Lurker, equip the Energy Tank, turn your face South, use the Energy Tank then immediately press Up + Left on controller 2. That's it, the cheat enabled. No Megaton Bombs or Inventory involved. Some effects are immediate and permanent: any items are available now and infinite, bombs are infinite too. Press Select to enter the Items menu, hold B on controller 1 then hold Select, while holding B + Select you can move the obstacles, release to return to normal mode. And finally, press Up + Left + Select on controller 1 to enter the stage select mode. Press A or B to change a level, then press Start.

US version:

(BUR) Theme song (added 05.10.07):
Set $2F8 to 1, a new title menu option that plays theme song along with the lyrics will appear. This option is unlockable in the Japanese version and can be enabled once you reach Items Shop after either 1, 3, 6, 9, 12, 16 or 21 level.

Bomberman

(BUR) Debug leftovers (added 04.08.15):
Setting RAM address $94 to a non-zero value before entering a level will cause the game to render hidden tiles (doors and powerups) as red half-destroyed walls until they are revealed.
Source: BMF54123

Bomberman II, Dynablaster

(UNI) Password generator:
Level:-
Bombs:
Blast range:
Random:
Password JP:
Password US:


(BUR) Hidden text (added 19.01.09):
The RESET routine in this game uses string
KOSAKA!!
to check if game was soft or hard reset.

(FIX) Secret passwords:
US|Japan-Effect
K3456712|PCDEFGAB-Sound test
K138BHDJ|PACHINKO-Manual detonator
K1HB3G1H|PANICMAN-Semi manual detonator
KJH5C13D|PONEJACK-Bonus stage
K2JG2135|PBOMBACE-Small primer time
K2JG2G1H|PBOMBMAN-Normal primer time
K2JG2JF4|PBOMBOLD-Long primer time

Bonk's Adventure, FC Genjin - Freakthoropus Computerus

(GEN) Level select and Sound test:
Hold Down + Left + A + B + Select + Start at the title screen. Switch between Level select and Sound test by pressing Select.

Booby Kids

(BUR) Password option (added 15.05.08):
There is some text left from early development stage. "ENTER PASSWORD" should be written on other nametable and probably switchable with the title screen.
0000EB50: 4C 54 44 2E FF 4E 20 43 4F 2C 4C 54 44 2E FE 28 LTD..N CO,LTD..(
0000EB60: 8A 45 4E 54 45 52 20 50 41 53 53 57 4F 52 44 FF .ENTER PASSWORD.
0000EB70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................


(BUR) Hidden text (added 08.12.08):
The RESET routine in this game uses string
ERIKO
to check if game was soft or hard reset.

Boogerman

(UNI) Debug feature (added 25.01.10):
Pause the game then press A + B to enable cheat mode, then press Up, Left, Down, Right, A, A, B, character will disappear and you will be able to scroll any place of level. To put character back, press Start.
Source: Yakovlev Victor

Boy and His Blob, A - Trouble on Blobolonia, Fushigi na Blobby - Blobania no Kiki

(BUR) GameGenie:
XAKKEZXY+UGKKOXXK-A simple coordinate display. The first set of values is for the boy, and the second set is for the Blob. Each value represents the character's current screen number, X position, and Y position, respectively.
Source: BMF54123

Bram Stoker's Dracula

(BUR) GameGenie:
TOXEYNGT-Enable the title screen cheat for activating the advanced menu features.
After applying GG press Select, Up, Start, Right, Left at the title screen, before "Push Start" message appears. A sound will confirm correct code entry. This is enables following features:
Invulnerability:
Select "controls" menu item, hold A + B and press Start, you will hear the sound, it is mean, you'll be full invulnerable.
Level select:
Select "sound" menu item, select sound index from 0 to 13, then hold A + B and press Start, you will hear confirmation sound. Then just select "start game" option to play from selected level.

Break Time - The National Pool Tour

(UNI) Disable AI thinking (added 11.07.13):
This cheat only available in the "NINE BALL", "ROTATION" and "NATIONAL POOL TOUR" game modes. During the game, before the opponent starts thinking, hold Up + Select on controller 1 and Down + Left + A on controller 2 at the same time.

(UNI) Instant win (added 24.02.14):
Select the "NATIONAL POOL TOUR" game mode. Before the game starts, at the US map screen hold A + B + Select. The password screen will load instead of the game, mean you automatically beat this tour. Hold these buttons all the time until the ending sequence.

(UNI) Secret passwords (added 11.07.13):
SJNG-Sound test
FNDG-Ending
VRHK-Speech test

(UNI) Password generator (added 11.07.13):
Name:
Match:
Password:


Bucky O'Hare

All versions:

(GEN) Secret passwords:
HARD!-Hard mode

(BUR) Sound check:
Also, all versions of this game contains "SOUND CHECK" string as one of game strings, but seems there is no any handlig code for this string nor for sound check mode.

(UNI) Password generator (added 02.01.08):
Bucky:
Jenny:
Deadeye:
Blinky:
Willy:
Toad's Ship:
Random:
Password:

Thanks to Awl for corrections.

Japanese version:

(BUR) Copyrights check:
As most games by Konami made after 1991 year, this game contains some simple copy protection, it checks integrity of the title screen tilemap around the "KONAMI 1991" copyrights, and additionally tests for the opcodes integrity of the test routine itself. If tests fails, then the game enables a "HARD!" mode with one-touch-death permanently without using a secret password. This code were removed from the US version.

Buggy Popper, Bump'n'Jump

(FIX) Continue (added 25.02.14):
At the game over screen, hold Select on controller 1 and press A and B in any order on controller 2. Release all buttons and start a new game, you'll start from the last played scene, instead of the first one.

Bugs Bunny Birthday Bash, Bugs Bunny Birthday Blowout, The, Happy Birthday Bugs

(BUR) Sound test:
The strings sitting in the second bonus game strings table, seems it was possible to switch to that mode from this bonus game. But no accessing to this string procedures has been found. The cheat seems to be completely disabled.
000133C0: FE C0 C5 C3 B8 FE B2 C5 C4 C4 BF BE FE 8A 8A 0A .PUSH.BUTTON....
000133D0: 07 0C FE C3 BF C5 BE B4 FE BD BF B4 B5 FE BE BF ...SOUND.MODE.NO
000133E0: B0 0A 0C FE FE FE C4 B9 BD B5 FE B9 C3 FE C5 C0 @.....TIME.IS.UP


Bugs Bunny Crazy Castle, The, Bugs Bunny Fun House

(UNI) Password generator (added 30.10.07):
Level:
Password:
Note: levels 61, 62, 63, 64 are Special.


Burai Fighter

(GEN) Secret passwords:
LOBB-All weapons
KAGA-99 lives

(BUR) Hidden text (added 19.01.09):
There is some hidden text inside the ROM:
TAKASINA INOUE
Probably it was a part of some program code since strings are zero-terminated, but game itself do nothing with them and there is no visible cross-refrences. There is no such strings in the US version of the game.

Buzz and Waldog (USA), Ko Ko Eo Deu Ben Ce (Korea)

(UNI) Rest screen (added 24.12.15):
Every 50 minutes of the game play, no matter if you die or got the game over screen, the game will show the special screen with "REST" message on it. So it looks like this game wanted you not to play too much and rest. If you be patient and wait 5 minutes at this screen, you'll obtain one extra life and the counter will be reset and stopped. Press Start to exit back to the game and timer will restart again, so you can repeat the process and obtain up to 99 lives.

 

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