nensondubois' codes

[nensondubois]

Kirby's Dream Land 2

Ability Select (Must inhale an object or enemy and you will gain selected ability)
01??58A0

[nensondubois]

Dr. Mario.nes

Discovered this a few days ago because Soundgarden - [Badmotorfinger #03] Slaves & Bulldozers is an excellent song.

Unused Sound Effect 01 08 Replace Pill Rotation Sound
AASAETIE
AAUEXTIE

Unused Sound Effect 02 0A Replace Pill Rotation Sound
ZASAETIE
ZAUEXTIE

Unused Sound Effect 03 0B Replace Pill Rotation Sound
LASAETIE
LAUEXTIE

[nensondubois]

Hayaoshi Quiz Ouza Ketteisen (J).sgb

Load Unused Super Game Boy PAL_TRN and PAL_SET routine.
032-12F-D5A

Here's another game everyone should bypass.

Game Genie code 032-12F-D5A will load the unused palette instead of the border, so loading the border first, then turning the code on will display both the unused palette and the border. This same code also loads the unused palette in Wetrix GB and Quest: Fantasy Challenge, so this is likely a sample palette used in the Super Game Boy SDK dev-kit demo.

[nensondubois]

Bust-A-Move 4.gbc

Bubble placement guide marker is always active
224-2ED-193

[nensondubois]

Bust-A-Move 3 DX.gb

Bubble placement guide marker is always active
225-DDD-193

[nensondubois]

Bust-A-Move 2 Arcade Edition.gb

Bubble placement guide marker is always active
228-D7D-193

[nensondubois]

Kirby's Dream Land 2

Select File to access Bonus Boss Game (Short version)
080-9FB-C46

[nensondubois]

Kirby's Dream Land 2

Select File to access Sound Test
000-9DB-E66

Select File to access Bonus Boss Game
000-9DB-E66
000-A1B-F7A

[nensondubois]

What?

[MathUser]

Wow, you're lucky you have a computer powerful enough to run bsnes and gameboy at the same time. Wish mine was that powerful.

[nensondubois]

Sutte Hakkun.sfc

Jump Maximum Height
C18619C9

Haven't tested with other versions.

[nensondubois]

SpongeBob SquarePants - Legend of the Lost Spatula.gbc

Title Screen music modifier
??2-C4B-D52
04 - Cowboy Theme
05 - Wipeout!
06 - 1950's Rock and Roll
07 - 1990's Rave Dance Club Pop
Other songs

[nensondubois]

The Smurfs (E).gb

Title Screen Music Modifier
??A-85D-80A
19
1C
1F
22
25
28
2B
2E
31
34
38 - Bonus
3B - Act Intro
3F - Death
40 - Story Intro/Game Over
41 - Story Sequence
46,4A - Boss 1
47 - Boss 2
4C - Ending

The Smurfs.sgb

Title Screen Music Modifier
??A-49D-80A
19
1C
1F
22
25
28
2B
2E
31
34
38 - Bonus
3B - Act Intro
3F - Death
40 - Story Intro/Game Over
41 - Story Sequence
46,4A - Boss 1
47 - Boss 2
4C - Ending

[nensondubois]

Doraemon no Game Boy de Asobouyo Deluxe 10 (J).sgb

Replace first MASK_EN 01 with unused ICON_EN 02
6E9-3EA-192

Replace second MASK_EN 01 with unused ICON_EN 02
6E9-6BA-192

Located at 0x03B76E is an unused Super Game Boy command ICON_EN 02. This disables the player's ability to select controller scheme A-TYPE and B-TYPE in-game and Super Game Boy BIOS settings. This would have been the only monochrome Game Boy game to set this function. It is unknown why any developer would set the bit to 02 but it might be understandable to disable palette selection by setting bit to 01 (as dumb as that even sounds.)
Game Genie code will replace the first (6E9-3EA-192) MASK_EN second (6E9-6BA-192) since there are two MASK_EN 01 commands, it is assumed that the unused ICON_EN 02 would belong as the first one but it is impossible to know for certain/where it was intended to load/why it wasn't in the final game/.
71020000000000000000000000000000

[nensondubois]

Daffy Duck The Marvin Missions.sgb

1 Hit kills with cannonballs (bosses will take an extra hit)
808-6EB-E6E
809-28B-E6E

Cannonballs deal no damage
008-6EB-E6E
009-28B-E6E