Wormhole

Arrow keys to move, space to shoot, shift for a big shot, Ctrl to pause. The eye-worms get faster and stronger the farther in the game you get, and sometimes drop powerups. You're stuck in a wormhole with no way to get out, and your goal is to survive for as long as possible. If you try to escape to a side or the top or bottom, it will teleport you to the other side.