Commander Keen 3: Keen Must Die! (Video Game 1990)
Commander Keen in Keen Dreams (Video Game 1991)
'Goodbye, Galaxy!' Episode IV: Secret of the Oracle (Video Game 1991)
'Goodbye, Galaxy!' Episode V: The Armageddon Machine (Video Game 1991)
Aliens Ate My Baby Sitter! (Video Game 1991)
Commander Keen 1: Marooned on Mars (Video Game 1990)