This is a Gameboy Color game inspired by the movie.
This game is pretty good considering the limited graphic capabilities of Gameboy (only supports 56 colors at once).
The game is a fighting game in which you can choose among Shrek, Donkey, and other characters from the movie in a battle quest.
After you defeat an opponent, you get special powers corresponding to the character you choose.
What's cool is after a while, you don't know who'll you be facing. The challenge is good, and the graphics.