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Game menu
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Pause button: start the game.
Joy1 fire1: enter settings / swap settings (Joy1 fire2: modify selected setting values)
Joy1 fire2: choose time.
Joy2 fire1: demo mode (Joy2 fire1: choose droids. Joy1 fire2: choose time)
Joy2 fire2: pause, unpause  (Pause button: abort)

How to play
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Joy1 left: top player left.
Joy1 right: top player right.
Joy1 up: top player up.
Joy1 down: top player down.
Joy1 fire1: top player fire.

Joy2 left: bottom player left.
Joy2 right: bottom player right.
Joy2 up: bottom player up.
Joy2 down: bottom player down.
Joy2 fire1: bottom player fire.