nensondubois' codes

[nensondubois]

Kirby's Tilt 'n' Tumble (U) [C][!].gbc

Load unused CGB palette in CGB mode (
Kirby's Tilt 'n' Tumble actually contains an unused palette in Game Boy DMG mode if the game is forced to load in GB DMG mode using an internal matching hash in the GBC bootrom. Use the third line to fix the checksum if you're using an emulator and CGB GBC bootrom otherwise the bootrom will hang indefinitely. May work with a Game Boy Game Genie cartridge. This set of codes also allows you to choose the CGB palettes as if it were a monochrome cartridge or DMG Game Boy game or GBC CodeBreaker device if converted.
001-43F-E69
001-BFF-F72
621-4DF-6E0

[nensondubois]

Tetris DX (JU) [C][!].gbc

Load unused CGB palette in CGB mode (I just found this five minutes ago when I was testing code. Tetris DX actually contains an unused palette in Game Boy DMG mode if the game is forced to load in GB DMG mode. Use the third line to fix the checksum if you're using an emulator and CGB GBC bootrom otherwise the bootrom will hang indefinitely. May work with a Game Boy Game Genie cartridge. This set of codes also allows you to choose the CGB palettes as if it were a monochrome cartridge or DMG Game Boy game or GBC CodeBreaker device if converted. Original discovery: https://twitter.com/nensondubois_/status/1429970288628813824)
001-43F-E68
F01-51F-6E9
B01-4DF-2AA

[nensondubois]

GAFJ01 Doubutsu no Mori + (Japan) Gamecube ID 1.0 1DB 1.1 160
[ActionReplay]

Enable NES Filer Mode (Working) (Press R to toggle; no debug flag enables this unused mode.) (nensondubois)
1.0
Q1G4-TG44-RAAVP
JE8Z-TFGK-AWQZQ
1.1
A8YP-3739-YKEQ7
JE8Z-TFGK-AWQZQ

[nensondubois]

GAFJ01 Doubutsu no Mori + (Japan) Gamecube ID 1.0 1DB 1.1 160
[ActionReplay]

Set Famicom game to Zelda no Densetsu / Legend of Zelda (Famicom Disk System version)
1.0
QTQX-JGQ8-9HWKW
T5UK-6Y4U-3MMDH
1.1
24MJ-J0VM-1PZ3W
T5UK-6Y4U-3MMDH
Set Famicom game to unused Zelda no Densetsu / Legend of Zelda (Famicom Cartridge version)
1.0
2C35-63D0-PUBNR
3AE1-5W9E-CFXFQ
1.1
7TW8-XC27-7RJER
3AE1-5W9E-CFXFQ
Set Famicom game to enter Famicom debug prompt screen
1.0
WZ2B-ME7P-Z1JBY
J7JA-BKBV-H3M0Q
1.1
3K8H-1282-W3H6W
J7JA-BKBV-H3M0Q

[nensondubois]

GAFJ01 Doubutsu no Mori + (Japan) Gamecube ID 1.0 1DB 1.1 160
[ActionReplay]
Enable Debug 1.0
41Q8-8TPB-R7W6E
P7EG-3B46-V69FV
Enable Debug 1.1
7QM9-UED4-2Q1ZA
P7EG-3B46-V69FV
Set Famicom game to unused Nazo no Murasamejou
1.0
T6ER-4C2X-UHGFM
29CW-9R3N-5V52C
1.1
0T1M-WPJR-UN9UW
29CW-9R3N-5V52C
Set Famicom game to unused Super Mario Bros 2
1.0
7X7E-GGZH-E8JXJ
F2FK-UA9K-5QD0B
1.1
6C6U-ZGXG-J5QTD
F2FK-UA9K-5QD0B

[nensondubois]

Waterworld (E) (Prototype).gen
Title screen music modifier
0013B4:70??
Unused songs: 02, 03, 04, 05, 0B

[nensondubois]

Mario Bros. (JU) [!].nes

Slow descent from jumping and landing for Mario and Baddies
PEXKNKXZ

Extended jump peak
GXSKXPZE

Controllable Jump
YUSKXPZA

Infinite Pow Block
VXNIIZVG

Jump through all layers (passive; does not bump ground)
AAKKOGET

Game uses title screen palette
ZANGKZLE

[nensondubois]

Gradius.nes

Start on Second Loop New Game Plus
OXUUNLIE
OXKUOLSX

Start on Very hard mode
EXUUSLSZ

Infinite Konami code
VZOPSLVI

Disable Pause
PESELZAA

Fly through Space (No enemies or ship control; turn off to activate normal mode)
AAVPOZZA

No enemies except for bosses
AEKXZZPA

[nensondubois]

Super Game Boy (J) (V1.0).sfc
Skip Intro Screen
00010301

Super Game Boy 2 (J) (V1.16) [!].sfc
Skip Intro Screen
00010400

[nensondubois]

Super Game Boy 1.sfc
Press L for speed function
00879501
Speed SOUND function
0087A80??
Speed SOUND attribute pitch volume
0087AD??

Super Game Boy 2 J.sfc
Press L for speed function
00879201
Speed SOUND function
0087A5??
Speed SOUND attribute pitch volume
0087AA?

[nensondubois]

Rolan's Curse 2.gb
Title screen music modifier
004-48E-4C6
??B-F38-5D2

[nensondubois]

Rolan's Curse
Title screen music modifier
??4-9CE-C4A

[nensondubois]

The only port of a N163/N106 8 channel game downgraded to 2A03

Rolling Thunder U.nes

Title screen music modifier (Music starts at 81)
SASANTSZ
8E69:??:86

[nensondubois]

Itadaki Street - Watashi no Mise ni Yottette (J).nes

Title screen music modifier
9695:A0:E6
96D5:??:00

Play full unused DPCM sample
SXNIYXSE

[nensondubois]

Monster Rancher Battle Card GB (USA) (SGB Enhanced).gbc

Title screen sound effect / music modifier
??9-0EB-3BA