Commander Keen in Goodbye, Galaxy!: The Armageddon Machine cover
DOS

Commander Keen in Goodbye, Galaxy!: The Armageddon Machine

18 Dec 1991
id Software
Apogee Software
Shooter, Platform
Single player
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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!