Reach the exit goal in each level by using your ability to swap the properties of any two objects. Give spikes a flat surface, turn metal blocks springy like a trampoline, and do anything else you can think of to overcome a variety of obstacles.
Flap through obstacles for as long as you can while avoiding the crazy mind-altering pills. The more pills you take the stronger your hallucinations will get. Grab the white pills to bring things back to normal.