This is a tool-assisted speedrun. For more information, see http://tasvideos.org/3031M.html
Initially published as a commercial game between Invasion of the Vorticons and Goodbye, Galaxy! in 1991, Commander Keen: Keen Dreams was largely overlooked until it saw a shareware release in late 1992 almost a year after Goodbye, Galaxy!. It is informally known as Keen 3.5 among fans.
In Keen Dreams, Commander Keen goes to sleep and finds himself in the land of Tuberia, where he discovers that Earth