Commander Keen is a series of side-scrolling platform video games developed primarily by id Software. The series consists of six main episodes, a "lost" episode, and a final game; all but the final game were originally released for MS-DOS in 1990 and 1991, while the 2001 Commander Keen was released for the Game Boy Color. The series follows the titular Commander Keen, the secret identity of the eight-year-old genius Billy Blaze, as he defends the Earth and the galaxy from alien threats with his homemade spaceship, rayguns, and pogo stick. The first three episodes were developed by Ideas from the Deep, the precursor to id, and published by Apogee Software as the shareware title Commander Keen in Invasion of the Vorticons; the "lost" episode 3.5 Commander Keen in Keen Dreams was developed by id and published as a retail title by Softdisk; episodes four and five were released by Apogee as the shareware Commander Keen in Goodbye, Galaxy; and the simultaneously developed episode six was published in retail by FormGen as Commander Keen in Aliens Ate My Babysitter. Ten years later, a homage and sequel to the series was developed by David A. Palmer Productions and published by Activision as Commander Keen.

Contributor(s): PresN

Over this past summer, I've been working on a project that I've always wanted to get to: Writing good articles on the entire Commander Keen series of video games. Besides being a fond memory from my childhood, they're an important part of video game history- the two main trilogies of episodes proved the viability of IBM-compatible PCs for action-based video games like Super Mario Bros., kickstarted the shareware distribution model, invented the industry's longest-running in-joke, and launched id Software, which went on to basically invent the first-person shooter genre as an encore. With the help of thorough reviews by Indrian, J Milburn, and IDV, the whole package of series page, 6.5 main episodes, and 1 awkward and overlooked pseudo-remake sequel is ready to go! --PresN 15:47, 28 October 2016 (UTC)[reply]