Commander Keen 5: The Armageddon Machine is a platform game, the fifth in the Commander Keen series as a whole, and the second in the second series Goodbye, Galaxy. Eight-year-old genius Billy "Commander Keen" Blaze arrives on board of the Shikadi's ship, the Omegamatic, in order to destroy it. Robots and aliens watch out, Keen's got his pogo stick and raygun at his side.