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It is a prototype game that is made for 2 players, one controls the ships with the left and right arrows and the space bar to shoot while the other controls the planets with a and d to move and s to shoot.
Left arrow: Move ship counterclockwise
Right arrow: Move ship clockwise
Space bar: Fire ship's laser
A: Move planet counterclockwise
D: Move planet clockwise
S: Shoot planet's warhead