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.
IGDB - An open video game database
Game Critic - Game Critic - your free, fun + social game review aggregator by pwntechnics.
FreeToGame - Your digital game store where everything is free!
Nerdburglars - Gaming tools and game play management tools to assist gamers in their progression in video games.
The Visual Novel Database - VNDB.org strives to be a comprehensive database for information about visual novels.