Commander Keen 0 (The Adventure Begins : Episode Zero - Printed to Pluto) - version 1.21 (2016)
Commander Keen 1 (Invasion of the Vorticons : Episode One - Marooned on Mars) - version 1.31 (1990)
Commander Keen 2 (Invasion of the Vorticons : Episode Two - The Earth Explodes) - version 1.31 (1990)
Commander Keen 3 (Invasion of the Vorticons : Episode Three - Keen Must Die!) - version 1.31 (1990)
Commander Keen 3.5 (Keen Dreams) - version 1.93 (1993), (Plus) 1.0 (2011), (Gold) 2.0 (2025)
Commander Keen 4 (Goodbye, Galaxy! : Episode IV - Secret of the Oracle) - version 1.4 (1991)
Commander Keen 5 (Goodbye, Galaxy! : Episode V - The Armageddon Machine) - version 1.4 (1991)
Commander Keen 5.5 (An Enhanced Level Pack) - version 5.0 (2007)
Commander Keen 6 (Aliens Ate My Babysitter) - version 1.5 (1991)
Commander Keen 7 (The Keys of Krodacia) - version 2.00 (2006)
Commander Keen 8 (Dead in the Desert) - version 3.20 (2009)
Commander Keen 9 (Battle of the Brains) - version 2.50 (2011)
Commander Keen 9.5 (The Eight Accumulators) - version 1.00 (2011)
Commander Keen 10 (Mirror Menace) - version Beta III (2013)
Commander Keen 11 (Sister Revenge) - disable
Commander Keen 12 - disable
Commander Keen 13 (The Ultra Omegamatic) - version 2.00 (2020)
Commander Keen 13.5 (The Armageddon Continues) - version 1.10 (2020)
Commander Keen 14 (Secret of the Sorcerer) - version 1.93 (2020)
Commander Keen 15 (The Final Showdown) - version 1.00 (2025)