Galaga is a fixed shooter arcade game that was released by Namco in 1981. The US version was released the same year under license to Midway.GameplayGalaga is a sequel to Galaxian and has similar gameplay. The player controls a spaceship (which can move only right or left) and shoots at swarms of incoming insect-like alien that fly in formation above him and occasionally swoop down to bomb him in a kamikaze-like dive. The enemies in the top row will sometimes dive with one or two escorts