Really Big Sky VS Galcon

Galaga - Galaga is a 1981 superb Shoot ‘em up, Action, Single-player, and Arcade video game created by Bandai Namco Studios Inc.

Star Defender 4 - Star Defender 4 is an Arcade, Action, Vertical-scroll, Shoot ‘em up, and Single-player video game created by Awem.

Gradius - Gradius is a 1984 Arcade, Horizontally-Scroll, Single-player, and Shoot ‘em up video game developed and published by Konami.

RayStorm - RayStorm is an Amazing Shoot ‘em-up, Co-op, Single and Multiplayer video game created by Taito Corporation.

Cold Space - Cold Space is a 3D, Space, Shoot ‘em-up and Single-player video game in which the player can take on the role of a protagonist who controls a different spaceship and starts his epic adventure against the alien force.

Galaga Legions DX - Galaga Legions DX is a Shoot-em-up and Single-player video game developed and publish by Namco Bandai Games.