Mostly Unpublished NES Cheats ;)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.

  Q Boy (Sachen)
  Q-bert
  Qi Guo Da Zhan (Nanjing, NJ029)
  Quarter Back Scramble
  Quattro Adventure (Codemasters)
  Quattro Arcade (Codemasters)
  Quattro Sports, Super Sports Challenge (Codemasters)
  Quest of Ki, The

Cheats summary:
generic cheats-3
unique cheats-17
buried secrets-1
fixed generic cheats-1
unverified games-0
games with secrets-8
games with no secrets found-2

Q Boy (Sachen)

(GEN) Stage select and Sound test:
At the title screen, simply press Select to go to a screen that lets you start at any level or cutscene and listen to the game's music.

(GEN) Mario character (added 27.08.14):
During the game, press Start to pause the game, then press Select to toggle between Q-Boy and Mario characters.

Q-bert

(FIX) Unlimited continue:
Hold Up + Select on controller 1 and Down + B on controller 2 at the same time, then press Reset, while the copyright screen is displayed, press Left on controller 2.

Qi Guo Da Zhan (Nanjing, NJ029)

(UNI) Secret message (added 21.05.14):
During the game, while in dialog mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Quarter Back Scramble

(UNI) Sound test:
At the title screen, after the message "PUSH START" appears, hold A and press Right, Up, Left, Down, Right, Down, Left, Up. Release A, hold B and press Right, Up, Left, Down, Right, Down, Left, Up again. Because the cheat counts only correct pressings, but not care about the wrong ones, just hold first A then B and roll over D-Pad buttons for a couple of times while holding it.

(UNI) Minimal game time (added 27.08.14):
At the Game Time select menu, point the menu cursor to the last option "5 MINUTES". Hold Down on controller 1 and Up + Select on controller 2. Now press B on any controller to change this option to "1 MINUTES". This cheat can be performed with other button combinations on both controllers, since the program combines input from both controllers at the same time.

(UNI) Autoplay (added 27.08.14):
Select a 2-Player game, at the Game Time select menu hold Up + B on controller 2, then press A on Start on controller 1. As against the "WATCH" mode, you couldn't select the attack of defence strategy, but you still need skip all this screens manually.

Quattro Adventure (Codemasters)

Main menu:

(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.

Super Robin Hood game:

(UNI) Extra 4 lives (added 25.01.10):
At the title screen, hold Left + A then press Start.
Source: Yakovlev Victor

Boomerang Kid game:

(UNI) Credits (added 27.08.14):
Immediately after the Codemasters logo very quickly press A, B, Select, Start before the title screen appears.

Treasure Island Dizzy game:

(GEN) Controller 2 (added 27.08.14):
At the title screen, press Start on controller 2 to play the game with controller 2.

(UNI) An extra rubber snorkel (added 27.08.14):
At the title screen, hold Down + Left + B + Select, then pres Start.

(UNI) Invulnerability and start from the Island in the Sky (added 27.08.14):
At the title screen, hold Up + A + B on controller 1 and Up + Right + A + Select on controller 2 at the same time, then pres Start. Note, that if you choose to play with controller 2, you must swap the button codes between controllers too.

Quattro Arcade (Codemasters)

Main menu:

(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.

C.J's Elephant Antics game:

(UNI) Secret words:
Enter one of following words as a player name for the hi-score screen, to obtain a corresponding effect in the next play.
ZIP-Maximum speed
POW-One-hit weapon
B52-Unlimited bombs
WIZ-Double weapon fire rate
SQC-Another Level
EPX-Another Level
AZS-Another Level
37!-Energy drink, unlimited bombs

F16 Renegade game:

(UNI) Level specific cheats (added 28.08.14):
There are a secret cheats in every first 9 levels except one. You must hold corresponding button from the table below before the level starts, then keep holding it after level is started and wait until the cheat is triggered. A sound and/or paletter flash will confirm cheat triggering. Some levels change its palette upon entering this cheats.
Level|Button|Effect
1|A|Extra life
2|B|Maximum weapons
3|Select|Extra 5 bombs
4|Down|Extra 5000 score
5|Left|Extra life, dark palette
7|Right|Extra life, dark palette
8|Up|Extra life, dark palette
9|Down|Maximum weapons, Extra 5 bombs, pink palette

(UNI) Level warps (added 28.08.14):
At the title screen, hold one of the following button combinations, then press Start. This will work only for 1-Player mode, so make sure when you press Select, the cursor menu is at the "1 PLAYER" position.
A-Level 2
B-Level 3
A + B-Level 4
A + B + Select-Level 5

(UNI) Secret words (added 28.08.14):
Enter one of following words as a player name for the hi-score screen, to obtain a corresponding effect in the next play. Note, that all words should be 7 characters wide, the empty symbols must be filled with spaces, the eight symbol isn't important.
QUATTRO-Extra 9 lives
ARCADE-Maximum weapons
LINUSII-Extra 9 bombs
MIG29-Start from Level 9
WARP17-Start from Level 17

Go! Dizzy Go!:

(UNI) Extra life (added 28.08.14):
At the title screen, hold B and press Start.

(UNI) World 3warp (added 28.08.14):
At the title screen, hold Left + A and press Start.

Quattro Sports, Super Sports Challenge (Codemasters)

(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.

Quest of Ki, The

(BUR) GameGenie (added 17.01.14):
GENKYZEY-Re-enables a simple debug mode. At the title screen select "NORMAL START" option then hold A + B on controller 1 and press Start to enable the Stage select mode. If you exit this mode just with Start, additionally, at the top-left corner of the screen a block of symbols will be displayed. This is a simple memory viewver and you can adjust the address and watch any RAM values by using controller 2. If you don't need it, before pressing Start in the Stage select screen, hold A on controller 2.

 

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