Invasion of the Vorticons   Episode One: Marooned on Mars       Episode Two: The Earth Explodes       Episode Three: Keen Must Die!         Goodbye, Galaxy!   Episode Four: The Secret of the Oracle       Episode Five: The Armageddon Machine         Aliens Ate my Baby Sitter!   Episode Six: Aliens Ate my Baby Sitter!         Keen Dreams   The "Lost Episode": Keen Dreams         Game Boy Color   Commander Keen Game Boy Color