Commander Keen in Goodbye, Galaxy!: The Armageddon Machine (1991)
by id Software, Apogee Software
Genres:Platform, Shooter
Themes:Action, Comedy, Science fiction
Game modes:Single player
Story:After completing the mission in episode one, Keen learns of the Shikadi's enormous ship, which doubles as the largest weapon ever built. So in episode two, titled "The Armageddon Machine", Keen faces his greatest challenge yet - to save the Galaxy!