How far can you travel down the rails? Jump from broken tracks, avoid obstacles, and collect as many gems as you can along the way. Choose to play in a variety of different worlds, each with their own unique theme.
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.
Survive for as long as you can as you fight through hordes of alien monsters. Grab new weapons that appear from random crate drops and earn money which can be used to purchase attack towers and health.