In Galaxian 3, you, and multiple other players man the guns on a starship called Dragoon. The piloting is handled elsewhere so all you're concerned with is gun-firing. As enemies approach, you must shoot them down. You are trying to make it through the enemy fighters to reach and destroy the Cannon Seed. Be advised that all players are on the same ship so you all share the same life meter. When that life meter reaches zero, everybody's game is over. (mobygames.com)