It is much harder to describe this excellently constructed game than it is to play it!
There are 50 levels to this game. Each level has a problem or situation that Maxwell (or the other avatars) find themselves in, that needs to be solved using creations from your imagination. Within each level you are given a scene with your objective.
The 'playground' area has 8 different environments and is freestyle mode. Here you can choose anything without the need to solve a puzzle.
You can skip levels and do not need to complete them in chronological order.