Mostly Unpublished NES Cheats ;)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.

  83-in-1 [p1][!], 100-in-1 (MG109) [p1][!]
  150-in-1 [p1][!], 200-in-1 - Elfland (Unl)[U][!]
  100 Man $ Kid - Maboroshi no Teiou Hen, Casino Kid
  1943
  1999 - Hore Mitakotoka! Seikimatsu
  3D Block
  4 Nin Uchi Mahjong
  6-in-1 (Caltron, HES)
  720
  8 Eyes

Cheats summary:
generic cheats-3
unique cheats-14
buried secrets-2
fixed generic cheats-0
unverified games-0
games with secrets-10
games with no secrets found-5

83-in-1 [p1][!], 100-in-1 (MG109) [p1][!]

(UNI) Test program (added 06.11.12):
Early "Unchained Melody" multigame carts surprisingly in addition to generic menu have an internal self test program, performing tests of CHR, PRG data, mirroring and banking support. Can be activated by pressing Select + Start at the game menu.
Source: tcrf.net

150-in-1 [p1][!], 200-in-1 - Elfland (Unl)[U][!]

(UNI) Test program (added 18.02.10):
Some pirate multigame carts surprisingly in addition to generic menu have an internal self test program, performing tests of CHR, PRG data, mirroring and banking support. Can be activated by pressing Select + Start at the game menu.

100 Man $ Kid - Maboroshi no Teiou Hen, Casino Kid

US version:

(GEN) Continue:
At the game over screen, hold Up then press Start.
Source: ReyVGM

(UNI) Secret passwords:
Instead "_" symbol you should use "FORWARD" option on the password entering screen. Secret passwords need to be enabled before the game. When you entering level and splash screen gives an advice to you, hold Start before pressing A to skip splash screen.
i_am_a_richman-Gives you $100000.
i_wanna_see_the_king-Final poker battle with the King (Elvis is alive! ;)). If you win you'll see ending sequence. Also enables the Debug mode, see below.
i_wanna_go_bankrupt-Takes you to the game over screen (strange cheat).
debug_monitor_switch_on-Debugging functions.
In addition to A + Start on controller 1, hold Left + A on controller 2 before skipping the splash screen.
To switch to in game debugging monitor hold Left + A on controller 2 then press Start on controller 1,
"MONITOR VERSION 1.00 PRESENT BY HIRO" screen appears. You will be able to view game events, play music and sounds.

Japanese version:

(UNI) Secret warps (added 03.02.14):
At the casino in any level during the game, a special warp places exists. If you stand on it, then hold Left + A on controller 2, and finally press A on controller 1, you'll be warped to another level.
Lasvegas, warp to Japan-In the bottom-right corner of the casino, there is a two tables, stand from the left of the leftmost table and face to the south.
Japan, warp to New York-Go to the bottom-right corner of the casino, there is a two water pools, from the right of the upper one there is a small single weddin machine. Stand just before it and face to the East.
New York, warp to Monaco-Go to the leftmost corner of the ship, stand before the leftmost light spot, face to the West.
Monaco, warp to Lasvegas-Go to the top-right corner of the casino, find a roulette table, there is a small path from the left of it, walk it up to the wall and face North.

(UNI) Secret message (added 03.03.14):
During the game, hold Left + A on controller 2, then press Select.

(UNI) Secret words (added 11.10.08):
Enter one of following words as player name, select "おわり" option hold Start and hold A on controller 1.
おかねもち-Gives you $100000.
うと゛いかに-Final poker battle. If you win you'll see ending sequence. Also enables the Debug mode, see below.
しんて゛い-Takes you to the game over screen (strange cheat).
もにたおん-Debug mode.
In addition to A + Start on controller 1, hold Left + A on controller 2 before skipping the splash screen.
To switch to the debugging monitor hold Left + A on controller 2 then press Start on controller 1,
"MONITOR VERSION 1.00 PRESENT BY HIRO" screen appears. You will be able to view game events, play music and sounds.

1943

(UNI) Auto-fire (added 03.02.14):
This cheat can be enabled with the Famicom 4-Player Adaptor (4-Score Adaptor for the NES system can't be used, it's incompatible). Hold B on controller 4, then press Reset. Now if you hold B on controller 1, your ship will fire always. So this cheat isn't much useful on any controller with auto-fire buttons, but very useful on Famicom system with the original controllers.

(UNI) Password generator (added 11.04.08):
Game Level:
Offensive Power:
Defensive Power:
Energy Level:
Special Weapon:
SW Time Limit:
Pts available:
Alt Password:
Password:


1999 - Hore Mitakotoka! Seikimatsu

(UNI) Sound test (added 23.12.12):
Start a new game, generate your character, and while three other characters are generating, hold A + B + Select + Start. When screen with current year is displayed, a string "さうんと えふく きょく" will appear at the screen bottom. Use D-Pad buttons to select music or sound, play it with A or B accordingly.

3D Block

(UNI) Level select (added 16.05.12):
At the title screen, press A, B, Up, Down on controller 1 then press A to increase level number. By default you can select only first 10 levels. With this cheat, you can select any level up to 20.

(UNI) Game ending (added 16.05.12):
At the title screen, press A, B, Up, Down on controller 1 then press Select 10 times. The girl's silhouette will change the color and show actual nude picture. This is what appears if you beat the game.

4 Nin Uchi Mahjong

(BUR) Hidden text (added 31.10.08):
There is hidden copyright message at the start of each known ROM versions:
JANKYO (C)HUDSON SOFT IN Sep/7/1984 By M.TOBITA
for PRG0 and
JANKYO (C)HUDSON SOFT IN Nov/13/1984 By M.TOBITA
for PRG1.

6-in-1 (Caltron, HES)

(BUR) Hidden text (added 03.02.14):
Menu for this multigame cartridge contains a hidden copyright string:
Main_Program & Hardware design by Shao_Hwa Chiou


720

(UNI) Class select (added 23.12.12):
At the title screen, set cursor to the "CONTINUE" option and press Left + A + Select + Start on controller 2. A small number will appear left to the menu, displaying the current class level. Each time you press the button code, number is increasing from 1 to 4. Now continue the game to play with selected class.

8 Eyes

Japanese version:

(GEN) Sound test:
Pause the game, and you can use controller 2 to scroll through the tracks with Left or Right and play a track with A. This cheat actually should've been enabled by the button code during pause A + B on controller 1 and A + B on controller 2 at the same time, but by accident, the cheat enable flag was overwritten with some system variable and in this particular place always non zero, so this cheat is always enabled automatically, when you enter the pause mode. In the US version this cheat was removed completely.
Source: ReyVGM

(UNI) Password generator (added 08.08.08):
Random:
Cleared:Arabia
Italia
India
Egypt
Germany
Spain
Africa
Hints:Between Black and White are five jewels
Between Black and White, there is no Yellow
Near Red there is no Orange, Yellow is on the far Left
Near White and Yellow there is no Purple
White is next to Yellow, Black is next to Red
Between Green and Purple are two jewels
Blue is next to Purple, Black is on the far Right
Level:
Password:


US version:

(GEN) Secret passwords:
TAXANTAXAN-Special stage
FINALSTAGE-Final stage

(UNI) Password generator (added 07.08.08):
Random:
Quest:
Cleared:Arabia
Italia
India
Egypt
Germany
Spain
Africa
Hints:Black is on the far right
White is next to Yellow
Black is next to Red
White, Orange, and purple are all separated
Between Black and White, there is no Yellow
Between Green and Purple are two jewels
Purple is next to Red
Level:
Password:


 

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