GameFAQs - Founded in 1995, GameFAQs has over 40,000 video game FAQs, Guides and Walkthroughs, over 250,000 cheat codes, and over 100,000 reviews, all submitted by our users to help you.
Nerdburglars - Gaming tools and game play management tools to assist gamers in their progression in video games.
Game Critic - Game Critic - your free, fun + social game review aggregator by pwntechnics.
Cheatbook DataBase - CheatBook DataBase 2012 - The encyclopedia of game cheats.
Project Cheat Codes - A project to bring cheat codes for all games into one light-weight, offline-compatible, mobile application. With weekly updates that add a fresh crop of games, you can be sure to find cheats for many of your favorites.
CheMax - CheMax is cheat-base for PC games, based on ChEaTs software and it is fully rewritten and updated.