Mostly Unpublished NES Cheats ;)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.

  Kaettekita! Gunjin Shougi - Nanya Sore!
  Kage no Densetsu, Legend of Kage, The
  Kagerou Densetsu
  Kaiketsu Yanchamaru, Kid Niki - Radical Ninja
  Kaiketsu Yanchamaru 2 - Karakuri Land
  Kaiketsu Yanchamaru 3 - Taiketsu! Zouringen
  Kame no Ongaeshi - Urashima Densetsu, Xexyz
  Kamen Rider Club
  Kamen Rider SD - Guranshokkaa no Yabou
  Kamen no Ninja - Akakage
  Karaoke Studio, Karaoke Studio Senyou Cassette Vol 1, Karaoke Studio Senyou Cassette Vol 2
  Karate Champ
  Karnov
  Kero Kero Keroppi no Daibouken
  Kero Kero Keroppi no Daibouken 2 - Donuts Ike ha Oosawagi!
  Keroppi to Keroriinu no Splash Bomb!
  Kick Master
  Kickle Cubicle, Meikyuu Shima
  Kid Icarus
  Kid Klown, Mickey Mouse 3 - Yume Fuusen, Mickey Mouse - Dream Balloon (Prototype)
  Kira Kira Star Night DX (Riki)
  King Kong 2 - Ikari no Megaton Punch
  King Neptune's Adventure
  King of Fighters 96
  King of Kings
  King of Kings, The (Wisdom Tree)
  Kinnikuman - Muscle Tag Match, M.U.S.C.L.E.
  Kiwi Kraze, New Zealand Story
  Klash Ball
  Knight Rider
  Konami Hyper Soccer
  Koushien
  Krazy Kreatures
  Krion Conquest, The, Magical Doropie
  Krusty's Fun House
  Kujaku Ou 2
  Kung-Fu Heroes, Super Chinese
  Kunio-kun no Nekketsu Soccer League
  Kurogane Hiroshi no Yosou Daisuki! - Kachiuma Densetsu
  Kyatto Ninden Teyandee
  Kyonshiizu 2
  Kyuukyoku Harikiri Koushien
  Kyuukyoku Harikiri Stadium
  Kyuukyoku Harikiri Stadium - Heisei Gannen Han
  Kyuukyoku Harikiri Stadium 3
  Kyuukyoku Tiger, Twin Cobra

Cheats summary:
generic cheats-24
unique cheats-46
buried secrets-17
fixed generic cheats-15
unverified games-0
games with secrets-46
games with no secrets found-24

Kaettekita! Gunjin Shougi - Nanya Sore!

(FIX) Secret passwords (added 04.06.14):
おんかく-Sound test
すしくいねなんやそれ-A secret map.
Source: ReyVGM

(FIX) Credits:
At the title screen, hold A + B on controller 2 and press A or Start on controller 1 or wait for the demo sequence is started.
Source: ReyVGM

(UNI) Manual debug display (added 04.06.14):
At the title screen, highlight the "1PLAY" option, then hold Right + A + B on controller 2 and press A or Start on controller 1 or wait for the demo sequence is started. During single player game or the demo sequence, a small number will be displayed at the center of the screen before enemy's turn, representing some enemy's parameters. Also, hold B on controller 2, then press B on controller 1 to switch on or off the enemy's names.

(UNI) Auto debug display (added 04.06.14):
Do the same as for Manual debug display cheat, but additionally hold B before press A, or hold A + B before press Start or before the demo sequence is start. Before every player's turn the names of the enemies will be switched on automatically and switched off before the enemy's turn as well. The small number appears the same.

Kage no Densetsu, Legend of Kage, The

(FIX) Extra 10 lives:
Hold A + B + Select + Start on controller 1 and A + B on controller 2 then press Reset. Release the buttons while the title screen is moving, then press A on controller 1 and B on controller 2 at the same time.

Kagerou Densetsu

(GEN) No random encounters:
Hold B on controller 2, while walking on the world map.
Source: ReyVGM

(GEN) Trigger Fights:
To manually trigger fights while on the world map, press:
A + Start-The enemy will be moving
A + Select-The enemy will be standing still
Source: ReyVGM

(GEN) Fight the bosses:
While on the world map, hold the following buttons on controller 2 and press Start (enemy will be moving) or Select (enemy will be standing still) on controller 1 to start the fight.
B-Earth Boss
Right-Fire Boss
A-Water Boss
A + B-Wild Boss
Source: ReyVGM

(GEN) Revive a character:
Open the menu on the world map, hold Up + A on controller 2 and select a fallen character with controller 1.
Source: ReyVGM

(GEN) Free walk:
Hold A on controller 2, while walking on the world map.
Source: ReyVGM

(UNI) Full equip (added 04.01.14):
Open the menu on the world map, put the cursor over the "CHARACTER" option, then hold Down + B on controller 2 and Up on controller 1 then press on controller 1 A.

(UNI) RAM test (added 27.10.07):
Hold Up + Down + Left + Right on controller 2 and press Reset, screen will be blue, then press A. The program is testing for $7F80=$55, $7FFF=$AA and all data between these addresses are zero. If all ok , the screen will flash with green screen and game continue as usual, if not, screen will be red and game will freeze. Similar tests can be found is some Taito games with specific mappers. Why this game uses the same type of tests is unknown.

Kaiketsu Yanchamaru, Kid Niki - Radical Ninja

(FIX) Secret bonus stages (added 05.06.14):
There are a lot of secret places during the game where you can find some bonuses or get a shortcut, usually two for each level, but some of them can't be opened together. Each secret place needs it's own unique method to open. Here is the complete list.
Round 1-9-Stop right on the starting point of the round 1-9, on the right side of the ledge, mash your sword to the left, then to the right. There are some enemies, exit is at round 1-11, you still can access the bonus at round 1-10, if die here, then you continue right from round 1-9.
Round 1-10-Stand in front of the water mill, crouch, jump, mash sword to the right, then to the left. A bonus room with falling coins and scrolls will appear. Exit is at the same place.
Round 2-6-Climb on the very first three in round 2-6, up to the top. Mash your sword in a small room to reveal hidden scrolls. Exit, and a bird will take you to the beginning of round 2-9.
Round 2-10-Stand in front of the second pillar, from the beginning of round 2-10. Jump once, then two times jump and mash your sword mid-air. It's a very short shortcut to round 2-11.
Round 3-4-Near the beginning of round 3-4, there is a cliff side and a cloud on the lower level. Jump down to the cloud, then jump up back to the cliff side. Repeat this two more times. Use your weapon in the small cave to reveal hidden scrolls. Exit is at the same place.
Round 3-8-Jump to the floating cloud at the very beginning of round 3-8, jump three times on it, when the cloud is in the topmost position. This shourtcut brings you to round 3-10.
Round 4-1-Right at the start of the round 4, jump to the left, to the middle of the rock and crouch there for a 4 seconds. This is the best shortcut in the game, brings you to round 4-8, avoiding very annoying frogs.
Round 4-11-At the beginning of round 4-11, jump to the first solid rock and jump on it three times. A fish head will appear instead of second solid rock to the right, jump to its mouth. Shourtcut leads to round 4-12 through the fish ass.
Round 5-5-Crouch for a 3 seconds under the second window, from the beginning of round 5-5. There is another falling prizes room. Exit is at the same place.
Round 5-12-Reach the Buddha statue near the end of level. Crouch in the middle of the statue, right under the belly, for a 3 seconds, and then shout in famicom's microphone at controller 2. This secret is the same for both the Japanese version and the US version, but you can't enter it on the NES due the lack of the microphone. Exit is at the same place.
Round 6-4-At the very beginning of round 6-4, jump to the right side of the water pond, and walk into the water to the left. Exit is at round 6-7.
Round 6-9-Near the beginning of round 6-9, stand at the rightmost corner of the roof. Jump right in a small cavity, stand at the rightmost corner of the cavity and jump up once, jump back to the roof. Repeat this four times. Exit is at the same place.
Round 7-3-There are a six doors with the tiger picture on it in rounds 7-3 to 7-5. Crouch for a 3 seconds at first 5 doors to access a different secret rooms. In the first door, there is another room with falling prizes, and jumping maneki-neko, which very annoying. The second door contains the whole Buddha statue, which gives you a present in the left hand. The third door contains a room with five scrolls, with word "ハズレ" (which means "FAIL" for some reason) written on them. The fourth and fifth doors are similar and leads to the rooms with some scrolls floating in air. All five rooms moves you to round 7-6, so you couldn't acces all them at once.

Kaiketsu Yanchamaru 2 - Karakuri Land

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

Kaiketsu Yanchamaru 3 - Taiketsu! Zouringen

(GEN) Stage select:
At the title screen, hold A + B on controller 2 and press Start on controller 1. Use A or B to select and Start to start the game on the desired level.
Source: ReyVGM

Kame no Ongaeshi - Urashima Densetsu, Xexyz

(FIX) Secret passwords (added 11.02.16):
E3D3D 3D3DF-Start at Area 12-4 (the final boss) with best weapon power and type and 50 balls.
A2A4A 6A8A0-Play even levels only (flight type with bosses) up to 10, then play levels 11 and 12 in regular way. Start with no weapons and 50 balls. This password is unlockable in the US version.
BBA13 57912-Play odd levels bosses only. Start with best weapon, but minimum weapon power and 50 balls. This password is unlockable in the US version.
**135 79BD*-Start at Area 12-4 (the final boss) with best weapon power and type, 800 balls and invulnerability. Note, doesn't enter any letters in positions denoted with *, use B to skip to the third letter.

(UNI) Full power and speed in even levels (added 11.02.16):
At the beginning of the flight levels with bosses (areas 2-1, 4-1, etc.), there is a little pause before you start to play, when you just sit on the entry door for a couple of seconds. During this time, hold Select, then quickly press Up, Down, Right, Left. If done correctly, you'll obtain a maximum power and speed instantly.

Kamen Rider Club

(BUR) GameGenie (added 27.03.12):
PENNEYAA-Enables debug features. During the game on controller 1 press Start, then press Up to increase money count, press Start to skip current level, press A to instantly jump to the battle mode. During battle press A on controller 2 to exit battle mode.

Kamen Rider SD - Guranshokkaa no Yabou

(UNI) Ending sequence (added 05.08.13):
Hold Right + B, then press Reset.

Kamen no Ninja - Akakage

(BUR) GameGenie (added 05.08.13):
EANGZAAA-Re-enables the all items and map cheat. At the title screen hold Left then press Start.
AGVGYAAA-Re-enables the invincibility cheat. At the title screen hold Right then press Start.

Karaoke Studio, Karaoke Studio Senyou Cassette Vol 1, Karaoke Studio Senyou Cassette Vol 2

(UNI) Microphone test (added 05.08.13):
Hold A + B on controller 2, then press Reset. Press A on controller 1 to hear a tone, press B to change the screen color.

Karate Champ

(BUR) Disabled cheat (added 11.09.08):
There is some old cheat left in the final version. When the title screen appears from the bottom of the screen, and before it stops, you must press Up, Right, Down, Left, Down, Right, Up, Left, A, B sequence and then press A to increase some internal counter up to 99. There is no so much time to enter thhis cheat and increase counter turing the title screen animation. In the final version memory areas for storing key sequence and for checking this sequence is different so it isn't possible to trigger cheat. Anyway, cheat counter don't reading at all in game, so it absolutely unuseful. It may be used as default round time counter. $50, $51 vars are counter in decimal notation, $4F main cheat flag, $53-$5C sequence check area, $52 - sequence length variable. $AD-$B6 - sequence store area, $AC - sequence length var (uninitialized by default, may be any index in zero memory).

Karnov

All versions:

(GEN) Level select:
At the title screen, hold Right + A + B + Select on controller 1, then press A on controller 2 once for each level to be skipped. Finally, press Start on controller 1 to begin game play. Note: This may only be done up to level 9.

(GEN) Suicide:
During game, press A + B on controller 2.

Japanese version:

(GEN) Continue:
At the game over screen, press Select + Start% on controller 1. This may only be done three times.

US version:

(BUR) GameGenie (added 11.06.14):
AAKITAZA-Re-enables the intro animation from the Japanese version. The text isn't translated, but font is changed, so it's unreadable.
ANXSYAYX-Use this code in addition to the previous one to replace the intro sequence with also removed ending sequence. The different ending can be seen if run this sequence after boot or gameplay.

Kero Kero Keroppi no Daibouken

(BUR) Hidden text:
There is some copyright text inside the ROM:
T.Ueno&F.Omorita


Kero Kero Keroppi no Daibouken 2 - Donuts Ike ha Oosawagi!

(UNI) Level select (added 26.11.13):
At the title screen, hold Select, then press Up, Up, Down, Right. A sound will confirm correct code entry, also the "PUSH START BUTTON" message will turns green. Now during the game, press Start to pause the game, press A to increase level number up to 13 or B to decrease level number. Unpause the game to jump straight to the selected level.

Keroppi to Keroriinu no Splash Bomb!

(UNI) Secret passwords (added 29.03.12):
さうんと゛をきく-Sound test
らすとた゛けみる-Ending Sequence
れいくんけ゛えむ-Rei-kun Game. Hold any of following buttons or its combinations on controller 2: A or B or Up or Left, before entering this password to enable some kind of paper-scissors-rock mini-game.

(UNI) Password generator (added 09.03.17):
Note, the password system allows to store some parameters which cannot be generated by the game (radius can't be higher than 3). This leads to the glitch passowrds, which doesn't allow the correct password generation further during the game if used.
Also note: the password system has a bug causing the game can't generate the passwords with symbols "゛゜", this bug has a workaround in the code, so such passwords cannot be generated at all. Still, you can use these symbols when generating the password and they will be decoded correctly. This also can be allowed with the "Glitch pass" checkbox.
Players number:
Stage:
Random:
BombsRadius
1P:
2P:
Glitch pass:
Password:


Kick Master

(UNI) Password generator:
Level:Glitch:
Sector:
Lives: note: 0 means 3!
Quest:
Magic:

MP:
Random:
Password:

Thanks to Awl for corrections.

(UNI) Secret passwords:
K!N!!! L!BB!?-Debug room
L!W!!G !M!N!?-Enable player's level selecting. Just press B at Spell selecting screen.

Kickle Cubicle, Meikyuu Shima

All versions:

(GEN) Sound test:
Hold A + B on controller 2 and press Reset.

(GEN) Kid Niki easter:
At the title screen, before the title menu appears, hold A on controller 2 and wait until it appear.

US version:

(FIX) Debug leftovers (added 16.06.14):
Hold Down on controller 1 and press Reset. The screen will turn white and will wait for additional input. Press one of the following buttons for corresponding effects.
Start on controller 1-Jump to the beginning of the regular game. The code is able to run the game from the beginning of one of the three lands, but there is no land selection routines left. So you can start only from the beginning.
Select on controller 1-Jump to the special game.
B on controller 2-The same as the Sound Test cheat.
Up on controller 2-Boss test mode. The same land selection routine, which isn't present in this version of the game, should've allow you to test any of three game's bosses. With the current code you can fight just the first one and see the corresponding cutscene if you win. If you loose, you'll returned in the debug mode back.

Japanese version:

(BUR) GameGenie (added 16.06.14):
GAOATEGK-Re-enables the debug leftovers from the US version. Just reset the game. This routine is mostly the same as in the US version, only the screen color will turn pink and if you press Start, you'll jump to the main game title, since there is no more code for selecting the starting level anymore.

Kid Icarus

(UNI) Password generator (added 04.01.14):
Bits:
















Password:


Kid Klown, Mickey Mouse 3 - Yume Fuusen, Mickey Mouse - Dream Balloon (Prototype)

(GEN) Hard mode:
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A. This code is unlockable after you beat the game on the normal difficulty.

Kira Kira Star Night DX (Riki)

(GEN) Debug menu (added 04.06.19):
At the title screen, press Right, Right, Left, Left, Select. Here you may choose any level, listen to any music, select the jumping method or enable an extra credits mode. This code is unlockable ang given to you at the ending credits after beating "LEVEL 1" game mode.

(GEN) New character (added 04.06.19):
At the title screen, press Right, Left, Right, Left, Select. Note, this character has a double jump ability, to use it press the "jump" button twice. This code is unlockable ang given to you at the ending credits after beating the "LEVEL 2" game mode.

(UNI) Debug menu extras (added 04.06.19):
At the Debug Menu, hold Select when selecting the music track in order to increase tempo of currently played track. Note, there aren't all tracks has a capability to increase its tempo. Also, hold Select before starting a new game with a selected level to be able to play as "New character" mentioned before instantly.

(UNI) Useless easter (added 04.06.19):
Hold Left, then press Reset. At the beginning of the game boot you'll hear additionally a short jingle. This cheat does nothing anymore apart from playing sound.

King Kong 2 - Ikari no Megaton Punch

(GEN) Continue:
At the game over screen, press B, A, Start.

(UNI) Level select:
At the title screen, press Right, Left, Right, Left, B, A, Up, Down, Up, Down, then press any other button before pressing Start. During the game you can press A on controller 2 to switch level or B to hold a game.

(UNI) Secret message (added 03.06.12):
After beating the game, when THE "STAFF" roll is about to over, before messages "PRESS START BUTTON" and "PLAY TIME" appears, hold A + B. Another message appears, depending of how much hours in total you've played. There are total 24 messages:
0 Hours-KIMI WA TENSAIDA 573
1 Hours-NAKANAKA NO MONDA 291
2 Hours-TAMANI WA KYUKEIO 999
3 Hours-YOKU KOKOMADE KORETANO 450
4 Hours-GOKUROUSAN 5963
5 Hours-6 JIKANMO SURUTOWA 606
6 Hours-7 JIKANMO YATSUTANOKA 778
7 Hours-YATSUPARI TENSAI...444
8 Hours-KURUSHIKUTEMO GAMAN 964
9 Hours-KIMI WA ERAI 747
10 Hours-KONO JIKAN OBENGAKUNI 555
11 Hours-HAYAKU NENASAI 889
12 Hours-TADAMONO DEWA NAINA 046
13 Hours-MOU 14 JIKAN 140
14 Hours-SHIKUDAI YATSUTAKANA 498
15 Hours-KONG WA SAIKOU 7777
16 Hours-KING KONG WA OMOSHIROI 321
17 Hours-ICHIKA BACHIKA OWARINA 180
18 Hours-KONG WA KIMIGA SUKIDA 375
19 Hours-HA-A 8080
20 Hours-TENSAI WA KUSAI 931
21 Hours-IMA WA NANJI DAROU
22 Hours-ATO 1 JIKANDE 1 NICHI 1111
23 Hours-KIMIMO SHITSUKOINA 4517

(UNI) CRC test (added 25.04.07):
Hold A + B, then press Reset. A "KINGKONG" string stands for the PRG ROM checking, a "KONAMI" string stands for the CHR ROM checking. "ONE" means test is OK, "TEN" means test has failed.

(BUR) Hidden text (added 03.06.12):
There are some unused text strings previously used for some menus or messages still in the ROm. First one is a mising STAFF person name, that doesn't appears in the final STAFF roll: "SHIMONETA KENJI". Second one, is a presumably strings from the old version of the title screen: "PLAY SELECT", "KONAMI 1986", "PUSH START BUTTAN". Third one, totally removed password screen texts: "KEY WORD", "END...PUSH A BUTTAN", "KEY WORD ERROR". And finally, at the beginning of the RESET routine, a version string placeholder appears: "RCxxx 1.0 .date.".

King Neptune's Adventure

(UNI) Cheat mode (added 30.11.13):
During the game, hold Up + A on controller 1 and Up on controller 2 then press B on controller 1. From now, bubble bombs will be unlimited. Additionally hold B, then press Select to skip current level. Hold A, then press Select to enable unlimited lives.

King of Fighters 96

(UNI) JY company's Easter egg:
At the title screen, press Down, Down, Left, Up, Right, Left, Up, Down.

King of Kings

(UNI) Secret names (added 07.10.08):
At the game save screen select 4th slot, then enter as name "オオタニ トモコ" (Ootani Tomoko) or "アヘ゛ ヒロミ" (Abe Hiromi) then before entering "オワリ" option hold A or B or both on controller 2. Name of save record will be now "ILOVEYOU".

(BUR) GameGenie (added 05.02.13):
GASYSIEI-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 WRAM.

King of Kings, The (Wisdom Tree)

(BUR) Stage skip (added 17.06.14):
As in many other games, developed by Color Dreams, this one contains a generic level skip cheat, but rather disabled, or which can be enabled in game scripts. To enable it, set the RAM var at $003B any non-zero value. Now during game hold B, then press Select to skip current level. There is no check for the maximum levels, so you just load a garbage if exceeded a number of valid levels.

Kinnikuman - Muscle Tag Match, M.U.S.C.L.E.

(UNI) Round select (added 11.12.08):
At the wrestler selection screen, hold A + B on controller 2 and B on controller 1 at the same, then press Up or Down on controller 2 time to increase or decrease round number accordingly.

Kiwi Kraze, New Zealand Story

(BUR) GameGenie (added 26.03.12):
NNNYEYAE-Enables Level Skip cheat. During the game play press Select to skip to the next level including the ending sequence.
Source: BMF54123

(BUR) Hidden text (added 26.03.12):
The RESET routine in this game uses string
HELLO
in game's character mapping, not ASCII, and one byte from the following code ($20) to check if game was soft or hard reset.
Source: BMF54123

Klash Ball

(GEN) Quick exit:
During the game, press Select + Start.

(UNI) Sound test:
At the title screen, when message "push start button" appears, press Down + A + B + Start on controller 1 and Right + B on controller 2 at the same time.

(UNI) Music test (added 05.01.08):
Hold Right on controller 2, then press Reset.

Knight Rider

All versions:

(FIX) Level skip (added 17.06.14):
Pause the game, hold Up + Left + A + B and press Select, then unpause it back. This will skip current level in the Mission mode right to the Boss, and complete the race in the Drive mode.

US version:

(FIX) Ending sequence (added 17.06.14):
Hold Select, then press Reset.

(FIX) Level select:
Hold B, then press Reset. At the briefing screen with Devon you will be able to select the starting level. Press Start to begin game play. Can be accessed with secret password below as well.

(UNI) Secret password (added 17.06.14):
MIYAZAWASAKAI-Enter the Level select mode, which can be accessed as well with button code above.

Japanese version:

(FIX) Ending sequence (added 17.06.14):
Hold Select or Up or both, then press Reset.

Konami Hyper Soccer

(BUR) Copyright check (added 02.12.13):
As most of Konami games after 1992 year, this one contains a complex copyright check inside. The game doing three different tests for it's data consistency at various game parts, including check for "KONAMI" word presence in the tilemaps, some other tilemaps consistency, and partial checksumming of every PRG banks. If any of tests fails, then protection flag is toggled. This will cause higher level of difficulty (9 against 3), clear all team parameters before the game start or penalty and doesn't allows you to make a goal.

Koushien

(UNI) Secret team:
Hold A on controller 1, then press Reset. While demo cut scene is rolling, before the title screen appears, press Up, Up, Down, Down, Left, Right, Left, Right, B, A on controller 1. Select one or two player mode, the first player's default home place will be "東西南北" or Touzainanboku (East, West, South and North) and team name will be "こうしえん高校" or Kuoshien koukou (Koushien senior high school).

Krazy Kreatures

(GEN) Sorf reset:
Press A + B + Select + Start to return to the title screen.

(GEN) Level select:
Start a game, press Start to pause it. Hold A and press Select 10 times. Now lose the game and go back to the options screen at the beginning, you will be able to select from 24.

(BUR) GameGenie (added 08.10.08):
KEOXYOUE-Enables joypad hint at name entering screen for the hi-score table.

Krion Conquest, The, Magical Doropie

Japanese version:

(UNI) Extra character 1 (added 28.12.08):
At the title screen, press Up, Down, Up, Down, Left, Right on controller 2, then on controller 1 hold Select and press Start. After game starts main player character will change to male character.

(UNI) Extra character 2 (added 28.12.08):
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, A, B, A, B on controller 2, then on controller 1 hold Select and press Start. After the game begins, the main character will change to male.

(UNI) Level select (added 28.12.08):
At the title screen, press Up, Down, Up, Down, Left, Right on controller 2, then on controller 1 hold Select and press A. Press Up or Down to change level number, press Left or Right to select between level and sublevel index. Press B to reset level number. Press A or Select to start new level. Level 5-4 actually doesn't exist. After some animation sequence you will be in the middle of nowhere.

(UNI) Invulnerability (added 28.12.08):
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, A, B, A, B on controller 2, then on controller 1 hold Select and press A.

US version:

(BUR) GameGenie (added 17.06.14):
GAEEGASA-Re-enables the continue option at the title screen.

Krusty's Fun House

(UNI) RAM clear (added 18.06.14):
Hold B on controller 1, then press Reset to reinit game's memory. This will reset all scores and entered passwords, which otherwise won't be erased until power off.

(FIX) Unlock all levels (added 27.09.12):
Hold Up + B + Select on controller 1 and Start on controller 2 at the same time, then power off and on again the console. Start a new game, instead of the first level password "HI__KIDS", the password "FLAVE___" will be displayed. Enter this password. From now, instead of scores, a string "CHEAT" will be displaying. All levels from now are unlocked and free to play. The same effect can be reached just by entering the following password without any cheats. Every time you enter this password, the cheat flag toggles on and off even after reset. When the cheat flag is off, the secret password only works as Level 5 password, which normally can't be accessed with password.

(FIX) Secret passwords (added 27.09.12):
GSSMELLS-Changes enemies on the levels to the big mouses.

(BUR) Hidden text (added 27.09.12):
The RESET routine in this game uses string
GAZ
to check if game was soft or hard reset. Also the game has more passwords, up to Level 6, this password is
GLPLONKA
but it is never used, if you enter the Level 6, all doors will be closed and you just can't play.

Kujaku Ou 2

(UNI) Sound test:
At the title screen, hold A + B then press Start.

(BUR) GameGenie:
KUKKTALX+OOKKYEEZ-Replaces the Sound test mode with disabled in the final release Debug menu.

Kung-Fu Heroes, Super Chinese

(FIX) Continue:
At the title screen, after the game over screen, hold A then press Start.

Kunio-kun no Nekketsu Soccer League

(UNI) Sound test (added 16.11.14):
On the Waiting Room screen (before the match), choose "おうえん きょく" ("Select BGM"), and then put cursor to the 6th option "ねっけつFCの てーま", hold Left and press Select.
Source: tcrf.net

(GEN) Hissatsu attacks:
During a Nekketsu League match, pause the game then press A, A, A, B, A, A, A, B, A, A, A, A, A, A, A, then unpause.

Kurogane Hiroshi no Yosou Daisuki! - Kachiuma Densetsu

(UNI) SRAM clear (added 18.06.14):
Enter the third option at the title menu (Backup Data), hold A + B on controller 2, then press Start on controller 1. All saved games will be erased.

(GEN) Credits (added 02.12.13):
At the title screen, hold Select + Start then press A on controller 1.
Source: ReyVGM

Kyatto Ninden Teyandee

(FIX) Hard Mode (added 18.06.14):
At the title screen, press A + B on controller 2 and B + Select + Start on controller 1 at the same time. Also, you can enable Hard Mode during ending sequence after beating the game, just press A on controller 2 and A + B + Select + Start on controller 1 at the same time. The game will immediately returns to the title screen with Hard Mode enabled.
Source: ReyVGM

(UNI) Sound test (added 25.08.06):
At the title screen, hold A + B + Select and press Start on controller 1.

(UNI) Main character select (added 18.06.14):
There are three main characters in the game. Normally, you can select only one of them to play before every Round. Pause the game, hold A + B on controller 2 and press Select on controller 1 to cycle between main characters. Deselect and select the main character in the Pause menu to apply the changes.

Kyonshiizu 2

(GEN) Instant retire (added 18.06.14):
Whenever you fighting an enemy, pause the game, press Up + A + B on controller 2. You'll immediately be returned to the temple at the beginning of the day, but just with a half of your money.
Source: ReyVGM

(FIX) Cheat mode (added 18.06.14):
Whenever you fighting an enemy, pause the game, hold A + B on controller 2 and keep holding it all the time you entering and applying this cheat. Now press Up, Down, Down, Left, Left, Left, Right, Right, Right, Right on controller 1. If done right, the word "Pause" will change to "KGDG #0". Enter one of the button codes below on controller 1 to change the number to your desired cheat. Each cheat has to be done sequentially, for example, if you want cheat #5, you have to enter the 1-4 first. Once the number changes to the cheat you want, press Down on controller 2 to apply it.
No code-0 - Refill Energy (default)
Up, Left, Down, Right, Up, Down, Up-1 - Extra Candle
Down, Left, Right, Down, Left, Down, Right-2 - Waterway Map
Up, Left, Left, Left, Right, Up, Left-3 - 99 Eggs
Right, Right, Up, Down, Left, Down, Down-4 - 99 Molotov Cocktails
Up, Left, Left, Up, Down, Right, Up-5 - Have The Crystal Ball
Down, Down, Left, Right, Down, Down, Right-6 - Greenbag from Gaia
Down, Left, Up, Up, Right, Up, Down-7 - Invincibility
Up, Up, Up, Up, Up, Up, Up-Return to the code 0
Source: ReyVGM

(UNI) Extra 100000 money (added 25.06.08):
Any time during the game, when you need a money, go to the Temple (the very first building where you appear at the game start and where you can sleep). This trick is working only during noon (reddish), so you must wait until it comes (not be mistaken with morning, which is reddish too, but appears after a night). Stand under the gate's roof, so you should be completely hidden with it. Pause the game and press Down + A + B on controller 2. Now unpause and enter the Temple. Select "Oyasumi" ("Sleep") option, if all done right, before you get to sleep, you'll obtain an extra 100000 money. This trick can be done multiple times. If you doesn't want to wait too long for the evening, while staying under the roof in pause mode, press Select to switch to the next part of day immediately. If currently is a day, press Select once, if night or morning, you must press it 3 or 2 times accordingly.

(UNI) SRAM clear (added 20.11.12):
Hold Up + Down + Left + Right on controller 2 then press Reset. Now, the program is waiting for A on controller 1 to be pressed. When you press it, if SRAM is properly initialized, a message "WORK RAM INIT OK" will be displayed all along with the "PROM OK!" and "CROM OK!" messages for a very short time. In other case, you'll see a message "WORK RAM NO INIT. BUSH B" and then "PLEASE SET POWER OFF" when B is pressed and WRAM is initialized. CRC tests for the PROM/CROM data is performed at the game's boot automatically, so if you can reach this WRAM test, it's mean, that tests are passed. Instead, if one of PROM/CROM data is damaged, the messages "PROM ERROR" or "CROM ERROR" will be displayed.

Kyuukyoku Harikiri Koushien

(UNI) Debug menu:
At the main game menu, enter the last option. In the new menu, point cursor to the last option again and press Select.

(UNI) Skip to 6th round (added 19.06.14):
At the PLAYBALL!! screen, hold Left + Select. When the game starts, a sound will confirm correct code entry. Now you'll start from 6th round.

(UNI) CRC test (added 19.06.14):
Hold Up + Down + Left + Right on controller 2, then press Reset. Game will perform a self-testing for the PRG, CHR ROMs and a SRAM test.

Kyuukyoku Harikiri Stadium

(UNI) WRAM test (added 03.12.13):
Hold Up + Down + Left + Right on controller 2, then press Reset. The screen will remain blue until you press A on controller 1. Then simple WRAM test will be performed. If data isn't match (from $7F80 to $7FFF, first byte is $55, last is $AA, the rest is $00), then "NG" on the pink background will be displayed and held. If match, then "OK" will be displayed for a short time on the green background and game continues to boot as usual.

Kyuukyoku Harikiri Stadium - Heisei Gannen Han

(UNI) WRAM test (added 03.12.13):
Hold Up + Down + Left + Right on controller 2, then press Reset. The screen will remain black until you press A on controller 1. Then simple WRAM test and init will be performed. If WRAM wasn't initialized, then "NG" on the red screen and then "OFF" will be displayed and held. After initialization, "OK" will be displayed for a short time on the green screen and the game continues to boot as usual.

(BUR) Hidden text (added 08.12.13):
The RESET routine in this game uses string
WINKY SOFT 1989
to check if game was soft or hard reset. The Winky Soft programmer sometimes left it's other hidden copyright, like "Sirius Works" with the number of game was developed. There are two games for NES are known having this sting: "Dai-2-Ji - Super Robot Taisen" with 006 number and "My Life My Love" with 005.

Kyuukyoku Harikiri Stadium 3

(UNI) Field madness (added 25.06.08):
When a right-handed catcher gets DEADBALL from the pitcher, quickly hold Up + A + B on controller 1. Team gets mad and going to FIGHT!

(GEN) 80000 Edit Points (added 28.12.12):
At the main menu, enter the "さくせい" ("Edit") option. Now hold Right + Start and press A twice. You should get 80,000 edit points instead of 30,000.
Source: ReyVGM

(GEN) Credits (added 28.12.12):
At the main menu, enter the "せってい" ("Settings") option. There is a hidden invisible menu option at the end of menu, select it and press A.
Source: ReyVGM

(UNI) WRAM test (added 03.12.13):
Hold Up + Down + Left + Right on controller 2, then press Reset. The screen will remain black until you press A on controller 1. Then simple WRAM test and init will be performed. If WRAM wasn't initialized, then "NG" on the red screen and then "POWER OFF" will be displayed and held. After initialization, "OK" will be displayed for a short time on the green screen and the game continues to boot as usual.

Kyuukyoku Tiger, Twin Cobra

Japanese version:

(GEN) Unlockable (added 07.04.08):
When "the end" message appears on screen after the credits, a message "Your password is KTTAISONMAI89PRTN23Y" appears. There are no password entering modes either in FC nor in GEN or PCE versions. Password meaning is unknown. The English version haven't any staff messages nor a "password" messages, but text is still present in ROM.

 

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