Let’s Play Commander Keen 5: The Armageddon Machine 01: Ion Ventilation System Finally, some actual gameplay; here is the Ion Ventilation System (level 1) from Commander Keen 5. Subscribe on YouTube https://drbrontosaurus.info/podcast-player/57046/lets-play-commander-keen-5-the-armageddon-machine-01-ion-ventilation-system.ogv Published by Dr. Brontosaurus man, myth, legend View all posts by Dr. Brontosaurus