Animaniacs Cheats for GameBoy

At the password screen, enter these in order from left to right, the going to the next line all the way to the left:

Password:	Result:
Wakko, Yakko, Yakko, Yakko, Wakko, Dot, Dot, Blank, Wakko	Beat Level 1 and 2 in Easy mode.
Dot, Yakko, Yakko, Blank, Yakko, Dot, Dot, Dot, Wakko	Beat Level 1 and 3 in Easy mode.
Dot, Blank, Yakko, Blank, Yakko, Wakko, Dot, Dot, Wakko	Beat Level 1 and 3 in Normal mode.
Dot, Yakko, Yakko, Wakko, Yakko, Dot, Dot, Yakko, Wakko	Beat Level 1 in Easy mode.
Wakko, Dot, Yakko, Wakko, Wakko, Yakko, Dot, Yakko, Wakko	Beat Level 1 in hard mode.
Dot, Blank, Yakko, Wakko, Yakko, Wakko, Dot, Yakko, Wakko	Beat Level 1 in Normal mode.
Dot, Blank, Blank, Dot, Yakko, Wakko, Dot, Wakko, Wakko	Beat Level 1, 2, and 3 in Normal mode and unlocking Level 4
Dot, Yakko, Blank, Dot, Dot, Dot, Dot, Wakko, Blank	Beat Level 2 and 3 in Easy mode.
Wawkko, Yakko, Yakko, Wakko, Blank, Dot, Dot, Blank, Blank	Beat Level 2 in Easy mode.
Wakko, Yakko, Yakko, Wakko, Blank, Dot, Dot, Blank, Blank	Beat Level 2 in Easy mode.
Dot, Blank, Yakko, Yakko, Dot, Wakko, Dot, Blank, Blank	Beat Level 2 in Normal mode.
Dot, Yakko, Yakko, Blank, Dot, Dot, Dot, Dot, Blank	Beat Level 3 in Easy mode.
Dot, Blank, Yakko, Blank, Dot, Wakko, Dot, Dot, Blank	Beat Level 3 in Normal mode.
Wakko, Yakko, Yakko, Yakko, Wakko, Dot, Dot, Blank, Wakko	Beat Levels 1 and 2 in Easy mode.
Wakko, Blank, Yakko, Yakko, Wakko, Wakko, Dot, Blank, Wakko	Beat Levels 1 and 2 in Normal mode.
Dot, Yako, Yako, Space, Yako, Dot, Dot, Dot, Wako	Beat Levels 1 and 3
Yakko, Yakko, Dot, Dot, Dot, Dot, Wakko, Wakko	Beat Levels 1, 2, and 3 in Easy mode and unlocking level 4.
Yakko, Yakko, Blank, Dot, Dot, Dot, Dot, Wakko, Wakko	Beat Levels 1-3 in Easy mode, unlock stage 4.
Dot, Yakko, Yakko, Wakko, Dot, Dot, Dot, Yakko	Beat Practice stage in Easy mode.
Dot, Dot, Yakko, Wakko, Dot, Yakko, Dot, Yakko, Blank	Beat Practice stage in hard mode.
Dot, Blank, Yakko, Wakko, Dot, Wakko, Dot, Yakko	Beat Practice stage in Normal mode.

In the second stage after the chandeliers, there will be a crate. If you push it all the way to the right, then the graphics will start becoming blurry and you won't be able to progress past the boulder lift. The only way to get rid of it is to lose a life or turn off the game. The only harmful effect is losing a life to get rid of it.