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Shoot asteroids for points!
Careful not to get hit by one!
Points earned per asteroid is equal to your difficulty.
A high score system is in place (which is saved).
Pressing X at any time exits the game.
Pressing Y at any time resets the game (but not the high score).
Pressing B on the title screen starts the game.
Pressing A in-game pauses/un-pauses the game.
Pressing B in-game shoots (if a shot is not all-ready on-screen).
Use the left-right buttons on the title screen to select difficulty.
Use the left-right buttons in-game to move your ship.