Cerebral Cortex 314 Information, screen shots, downloads, an ASCII art section, level editor, and level sets for Keen 1. http://www.classicgaming.com/cc314/

The Commander Keen Web Page Offers cheats, hints, pictures, downloads, and guestbook. http://www.angelfire.com/hi5/justinj88/

pocket.ign.com: Keen! Offers rumours about a possible version of Id Software's Commander Keen game for the Game Boy Color. http://pocket.ign.com/articles/082/082671p1.html

3D Realms: A Look Back at Commander Keen The history of Commander Keen, includes photos, and screenshots. http://www.3drealms.com/keenhistory/

Justin's Really Keen Page Includes downloads and a list of where all the 1UPs in the games can be found. http://gothmog.homeip.net:8000/keen/

S&F Prod Cheats, sounds, links, and downloads. http://www.student.tue.nl/u/a.f.smeijers/sfp/fram/ckeen.htm

Commander Keen Fan Site Includes information, screenshots, downloads, cheats and links. http://www.commander-keen.com/

GameSpot Frank Provo reviews the Game Boy Color version. Includes screen shots and passwords. Score: 6.8 out of 10. http://www.gamespot.com/gbc/action/commanderkeen/

Keen Galaxy Downloads, fan-made games, multimedia files, level packs, and episode guide. http://commander.keengalaxy.com/

GameSpot: Toy Story 2 Nintendo 64 Reviewed by Lauren Fielder, "The shortcomings, however, aren't enough to take away an entertaining movie-to-video-game effort." http://gamespot.com/gamespot/stories/reviews/0,10867,2545323,00.html