nensondubois' codes

[nensondubois]

Mole Mania

Can Select any level from the start (Saves to RAM but you must turn the code back on after selecting Level 1 otherwise you won't be able to move to the other levels. The map screen will have blank trails but you can still select any level.)
77C-CEA-80B

[MathUser]

Still finding that unused stuff I see. Good luck.

[nensondubois]

Not every code I create accesses unused content; infinite lives and other oddities or something that annoys me in a game requires immediate attention.

[nensondubois]

Daffy Duck The Marvin Missions.sgb

Jetpack Jump Height
??D-58C-2AA

Infinite Jetpack (The code I saw in the database does not work)
00D-48C-19A

Start with slightly more Jetpack Fuel than usual
32D-4AC-B3A

Start with more Jetpack Fuel than usual
64D-4AC-B3A

Start with much more Jetpack Fuel than usual
D0D-4AC-B3A

Start with maximum amount of Jetpack Fuel
FFD-4AC-B3A

[nensondubois]

Daffy Duck The Marvin Missions.sgb

Infinite health
3E2-B78-B31
052-B88-E6E

Receive half damage
002-B88-E6E

[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

[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]

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]

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]

Sutte Hakkun.sfc

Jump Maximum Height
C18619C9

Haven't tested with other versions.

[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]

What?

[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]

Kirby's Dream Land 2

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

[nensondubois]

Bust-A-Move 2 Arcade Edition.gb

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