Game development discussion forum.
Community site for programming with DIV.
Design challenges, tutorials, and articles on coding design.
Freeware 3D construction kit for Windows based on a RayCaster.
Game and graphics programming articles of interest to game programmers with all levels of experience.
Information and resources for quake developers
A monthly publication that delivers technical, how-to articles
The Art and Science of making Games.
A programmers' resource with extensive resources related to graphics and games programming.
Attempts to catalogue every game AI article ever written in game development books, magazines, and conference proceedings. All articles can be searched by topic, genre, resource, or date. It's a very focused site and a great place to find out what secrets game AI professionals have published.