Editing Commander Keen (section)

==Plot==
In the first episode, "Marooned on Mars", eight-year-old Billy Blaze, a child genius, builds a spaceship (the "Beans with Bacon Megarocket") and puts on his older brother's football helmet to become Commander Keen. One night while his parents are out of the house he flies to Mars to explore; while away from the ship the Vorticons steal four vital components and hide them in Martian cities. Keen journeys through Martian cities and outposts to find the components, despite the efforts of Martians and robots; the final component is guarded by a Vorticon. Keen returns to Earth—discovering a Vorticon mothership in orbit—and beats his parents home. In "The Earth Explodes" he travels through the mothership and disables its weapons, at the end discovering that the Vorticons are being mind-controlled by the mysterious Grand Intellect, who is actually behind the attack on Earth. In "Keen Must Die" he fights through the cities and outposts of the Vorticon home planet to reach the Grand Intellect, who is revealed to be his school rival Mortimer McMire, who he then defeats.

In ''Keen Dreams'', which is set outside of the main continuity, Keen falls asleep after dinner and wakes up in his pajamas in bed on top of a hill. After being told by potato soldiers that he is now the slave of King Boobus Toober, and being asked by another child to save them, he journeys through the vegetable-themed land to defeat the King, waking up in his bed at home afterwards.

The main series of games continues in "Secret of the Oracle", where Keen builds a faster-than-light radio and overhears plans by a race of aliens known as the Shikadi to destroy the galaxy. He flies off to the Oracle on the planet of Gnosticus IV, only to discover that the Gnosticenes that run the Oracle have been kidnapped by the Shikadi. Keen fights through the outposts and temples of the Shadowlands, rescuing the Gnosticenes, and the Oracle then tells Keen that the Shikadi are "shadow beings from the far side of the galaxy" who are building an Armageddon Machine at Korath III to blow up the galaxy and rebuild it as they wish afterwards.

In "The Armageddon Machine", Keen infiltrates the titular space station to disable it, destroying the subsystems of the machine located in each level. When he finishes, he finds that the "Gannalech" that was leading the Shikadi was the Grand Intellect McMire, who had escaped Keen in ''Vorticons'' by leaving behind an android in his place. A note left behind for Keen tells him that McMire plans to instead destroy the Universe. ''Aliens Ate My Babysitter'' is set around the same time, though it is unclear whether it is actually after the events of ''Goodbye, Galaxy''; in it, the alien Bloogs of Fribbulus Xax kidnap Keen's babysitter and plan to eat her. Keen finds his way to her, and she reveals that she is McMire's sister, and that McMire was behind her kidnapping as a way to distract Keen while he plotted to destroy the universe. While the planned trilogy that would cover that plot, ''The Universe is Toast'', was never developed, the Game Boy Color ''Commander Keen'' has a sub-space anomaly disrupting life on Earth as an effect of a plot by the Bloogs, Shikadi, and Droidicus, led by McMire, to destroy the universe. Keen fights his way through the three races' planets to find the plasma crystals powering the Omegamatic station, only for McMire to escape after taunting Keen a final time.