Gamefaqs
For the dreamcast, gamefaqs has game information and a community message board for game discussion.
http://www.gamefaqs.com/dreamcast
Ign
Mortal kombat gold for dreamcast cheats - ign has all the codes, cheat codes, unlockables, easter eggs, achievements, hints, tips and secrets
http://www.ign.com/cheats/games/mortal-kombat-gold-dc-10950
Gamecheats
Gamecheats
http://www.gamecheats.com/sega-dreamcast
Cheatcodes
Official dreamcast cheats, cheat codes, achievements/trophies, glitches, easter eggs, hints, tips, tricks, secrets, guides, and faqs from cheatcodes.com.
http://cheatcodes.com/dreamcast
Cheatcc
The best and largest selection of dreamcast video game cheats, dreamcast video game codes, dreamcast video game cheat codes, dreamcast cheatcodes, dreamcast passwords, dreamcast hints, dreamcast tips, dreamcast tricks, dreamcast strategy guides, dreamcast faqs, codes for dreamcast, dreamcast codes, dreamcast cheats, dreamcast cheat codes, dreamcast cheatcodes, dreamcast passwords, dreamcast hints, dreamcast tips, dreamcast tricks, dreamcast strategy guides, dreamcast faqs, dreamcast video game cheat codes
http://www.cheatcc.com/dc/index.html
Dreamcast
Cheats.it has the best dreamcast cheat codes for all your favourite dc games.
http://dreamcast.cheats.it
Gamewinners
Gamewinners
http://www.gamewinners.com/DC
Supercheats
The best site for dreamcast cheats. all free and updated daily. has forums and question and answer facility
http://www.supercheats.com/dreamcast.htm