There are 2 main versions of this game. The PC/PS2 version and the Wii version.

PC/PS2 -Before completing a level, in addition to getting the 8 discs, you must collect a certain amount of objects throughout the levels. -Some level layouts are slightly different. -There is no training level -You can skip the exit portal cinematic -The PC port of the game seems to have vanished from the face of the earth. If anyone can find a full version of the game, that would be incredible.

Wii -As stated before, there is a training level and level layouts are slightly different. -The only version released in NTSC regions -Possiblity of a 100% category due to there being multiple modes to replay levels in.