Shoot anything that moves on screen, Hint beware of advancing space invaders.
Instructions:
41st Reality is a sort of mash-up between Asteroids and Space Invaders where you pilot a tiny craft against waves of incoming enemies (which happen to be aliens and geometric shapes). Power-ups appear from time to time to give you a hand, but otherwise its just you and your reflexes keeping you alive.
Use the W,S,A,D to move. Use the mouse to aim.