Game Developer Magazine:A monthly publication that delivers technical, how-to articles
NeHe Productions:OpenGL programming. Many tutorials, sample programs/games, and source code. A CD is available for order containing all of the site.
2Dgame-tutorial: Ten step tutorial for programming a 2-dimensional parrallax-scroller with realistic physics, sound, and music.
2DNow: A forum for people interested in independent 2D game development.
3Ddrome: News, tutorials, sample code, links related to 3D graphics and game development.
3rdlife.net: A game community driven game programming and modding website. Includes tutorials and articles, downloads.
A Critical Look at Programming Languages: An article by Tim Sweeney on the evolution and future of programming languages as it relates to game development.
AI Wisdom: 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.
Amit's Game Programming Information: Descriptions of algorithms for artificial intelligence, path finding, game design, objects, hexagonal tiles, threads, and text games.
Blitz Basic: A specialized version of BASIC designed specifically for game development. Includes features like custom types and functions. Code is compiled before execution to speed things up.
BlueParrots: C, C++, Assembly source code examples for games, graphics, and sound.
C# Game Dev: A set of computer RPG programming tutorials using C# and DirectX. Regular articles on the creation of roleplaying games. Topics including Lua scripting, NPCs, maps.
CFXweb - Demo and Game Development: Daily news, articles, art gallery, downloads, games, demos, demo scene news, forums, online irc clients, and source code.
Cylinder Based Collision Detection: A game programming tutorial on Cylinder based collision detection and response.
Daneu, Ales: AD Snooker and Briskola games with C++ sources.
DevMaster.net: A game development site that provides articles, 3D engines database, a wiki, daily news updates, and a discussion forum.
DIV Design Studio: Community site for programming with DIV.
East Coast Games: training new programmers and to making great games, tutorials on C/C++, Java and DirectX, several games written for Windows (freeware).
Exaflop: A programmers' resource with extensive resources related to graphics and games programming.
flipCode: Find articles, coding techniques, news, and interviews relating to Game programming. A fair number of specific tutorials as well.
Fy Software: Game development, tutorials and sources. C++/OpenGL and Win32.
Gamasutra: The Art and Science of making Games.
Game Algorithms: Algorithms, source code and references.
Game LS: The game development resource community driven database of sites, articles, multimedia. Forums.
Game Tutorials: Over one hundred tutorials in C/C++ for the beginning programmer.
GameDev.net: Featuring a huge reference library and weekly interviews of professionals inside the industry. Participate in a public game development project.
Gamedev.org: Game development discussion forum.
GameProgrammer.com: Game and graphics programming articles of interest to game programmers with all levels of experience.
GameProgrammer.org: Game programming tutorials, codes, news, forums, links and related downloads. Containing Direct3D and Win32 SDK Tutorials.
Games Creation Resources: Game creation programs for non-programmers.
Games Research: Materials from, and links to resources related to, the Siggraph 2000 course "Games Research: the Science of Interactive Entertainment"
Games++ Megasite: Game programming, online games, cheats, tutorials, references, Direct X, C/C++, and Java.
GarageGames.com: An online game development community and resource center, keeping independent and professional developers connected to their peers, the industry and cutting edge information, tools and code.
Gepard Studio: Downloads for game programming, along with some Java, Linux, DOS and Windows games.
GGD - Global Game Developer: Provides tools and knowledge needed to create and distribute games. Including tutorials, tips, downloads and books.
How to Start a Gameproject/Gamedevelop Company: Article from a swedish programmer. Also related links.
Impacto: A tool to make games and multimedia applications.
Imperial Snowman Soft: Game programming resources for VB, Java, JavaScript, Python and Perl. Tutorials, source codes, forum, sound files, pictures, programming tools and links.
Irt.org: Design challenges, tutorials, and articles on coding design.
Knowledge Hound: Tutorials, tips, and how-to guides for game programmers of all types.
Kylm.com: A game development community with tutorials, game sources, forums, articles, possibility to upload your own game or comment others.
LunaticSystems: An independent game developer's site containing resources such as tutorials, integration guides and source code relating to advanced C++ programming techniques applied to games.
Mappy for PC (DOS and Win95): A utility for creating flexible 'maps' for tile based 2D games (scrolling shoot-em-ups, or 8-way scrolling adventures, whatever).
Paul Hsieh: Source code, tips, and tricks.
PC Game Programming Explorer: Book by Dave Roberts that takes readers inside the world of PC game programming and reveals the essential techniques to make game programming easy and fun.
Quake Developers Pages: Information and resources for quake developers
Ray Game Designer: Freeware 3D construction kit for Windows based on a RayCaster.
Reprints of Works by Diana Gruber: Articles and book chapters by Diana Gruber on the subject of game design and programming.
Rise Game Development Home Page: Tutorials on games and QBasic along with developer tools downloads.
RPG game programming page: Page related to RPG programming. Has a freeware game (not finished, but in development) w/ all its sources
Simple Game Engine: Information, screenshots and downloads for Simple Game Engine (freeware) that enables you to write your own games using a definition language.
SoftLight Development: Lots of programs and source code, development tools, Direct X examples, and killer links. With a Windows focus.
The Game Programming Wiki: Game programming tutorials and source code.
The Playground Project: Building computer environments for 4-8 year-olds to play, design, and create games. A playground is a place to play with rules not just by them.
Toymaker: Aimed mainly at the new games programmer. It contains notes and answers to common questions with examples in C++ and DirectX. Resources. T2, a free terrain texture generation tool.
Web Game Builder: Free resource for anyone wishing to write online games. Offering tutorials, forums and linking to member games.
XDev.ru: Games development articles and tutorials. Game industry news.
Xtreme Games: Free tools and source code and an offer to sign up new developers for joint ventures for a general pooling of resources.
Zingtech Computer Solutions: Development site with tutorials, an introduction to DirectX and a game idea center. Also Allegro game programming library sections. Books. Links.
Ziron Multimedia: Links to articles, source code, and tutorials.
zstar: An extensible, distributed system for game development, consisting of an abstract game client, and a game server to which players connect to play games against other players or alone.