Tap the scree, or press space to jump. But make sure you time your jumps precisely! You ca eve hold your figer o the scree, or hold dow space to jump repeatedly. (Or fly up, if you're i a rocket) Look out for spikes, if you touch them you will be retured to the begiig of the level. There are also may mutators to spice up the experiece.

Take control of a square and get the end, that's it! But it's not as easy as it would seem. The levels you go through are pixel-perfect mazes!