Players move a weapon, a Stargate, which is able to fire projectiles to defeat enemies, but is also vulnerable to bombs and has five lives. The game contains four difficulty levels of play, from K to 1-3, with the K level featuring slower paced gameplay designed for children. In each level, a player must defeat three waves of enemies, and then defeat the Pentapus. The game is compatible with a joystick, features a pause system, and allows high scores to be saved and written to the disk.
