BigCheat.com: X Box Cheat Codes, PlayStation 2 Cheat Codes, and game cheat codes and cheats for a variety of platforms inclusing GameCube, PC and GameBoy Advance (GBA)
Cheaters Krypt: thousands of cheats for new and ancient gaming systems, from the Amiga to the Xbox
Cheatsearch.com: the worlds largest database of hints and cheats for classic games.
CheatZone: Cheat Zone maintains a huge searchable database of cheats Sony, GameCube, Xbox, PC, Sega, Nintendo, Atari and many others.
Game Genie.com: hints and cheats for old and new favourites.
Gamefaqs.com: faq for videogames, post a question and get some help when you get stuck...
GameWinners.com: hints, tips, cheats, walkthroughs and faqs for all formats.
Gamezilla: cheats and walkthroughs for all gaming platforms.
The Gamerzone: CLASSIC GAME CHEATS, HINTS AND TIPS FOR PC, PLAYSTATION, DREAMCAST AND MORE.
UK Cheats: hints, cheats and walkthroughs for GBA, PS2, PSOne, PC and more. includes a cheat search engine where you can search by game or by format.