Alien ships come at your missile launcher from every direction. They peel off from their formation singly or in groups of twos or threes. The more aliens you destroy, the more of their reinforcements attack. Each ship is piloted by a highly skilled captain capable of maneuvering with incredible agility. Realistic sounds add to the intensity. Up to 4 players. The original title of Galactic Invasion was Galaxian after the arcade classic programmed by Bally (Midway). However, Midway only possessed arcade distribution rights and wasn't able to distribute home console versions of the game. The game was retitled and released as Galactic Invasion for the Astrocade. That said, there are some revisions of the game that do feature the title Galaxian on the title screen or on the physical cartridge itself.