A collection of open source client, server, and editor to build online role playing games.

The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. Source code for the entire project is available. (OpenGL)[OS Independent]

A massive multiplayer space trading and combat game for Linux. [GPL]

Developer of the open source HAWK game engine, and the OpenNL portable networking library for Windows.

Developing an Open Source strategy game based on Sid Meier's Civilization II. Public project.

An Open Source project in which the user takes the form of Tux (the Linux Mascot) and races downhill through alpine trails.

Shawn Hargreaves has several Open Source projects and interesting articles about the future of Open Source games.

The LGDC provides concise and accurate articles about Linux gaming news, development tutorials, and reviews of the latest tools and resources.

phpRPG is a multiplayer fantasy role playing game driven by PHP and MySQL, with aims to develop a web-based game engine which shares common qualities between multiple user dungeons (MUDs), paper & pen RPGs and computer RPGs.

This little addictive game contains the same elements used in games like drugwars, except with a space theme.

A fantasy RPG game available for Linux, FreeBSD and BeOS. MacOS and Windows support will come soon.

Multiplayer web-based game of space exploration and economic competition.

Open-source Tetris implementation.

Chess engine including artificial intelligence, user interface and several features.

Quantum Star SE is a browser based space strategy game involving Mining, Combat, Exploration, Planets and Clans played in real time. (PHP/SQL)[Platform Independent]

Web-based, multi-player space exploration and strategy game (PHP) [OS Independent].

Clone of the classic game "Paradroid". (C, Python) [MacOS, Windows 95/98/2000, Linux]

2D single player space strategy, combat, and trading game. (C++) [OS Independent]

A 2D real-time multiplayer tank battling game. (C++) [Windows 9X/2000/XP, Linux]

Danger from the deep (aka dangerdeep) is a Free / Open Source World War II german submarine simulation. [Linux / Windows] (C++)

Developing a Real-Time Strategy

Sekoya is a gathering of students trying to develop nice open source games. Our main project is a MMORPG running under Linux and Windows.

Free quiz game based on the "Who Wants to Be a Millionaire" game show. Add your own questions for classroom use or for fun. [Java, OS Independent, GPL]

Right Wing Smackdown Game. The game for the whole violent leftist family. For any unix command line, including OS X.

A game module for Nova Gaming System, an open source web based game with servers worldwide.

A web magazine devoted to open source game development.

Build games on Secureplay sourcecode libraries in Flash/Java C++. Create secure game transactions for multiplayer games (player management, state/event control, random events, secret events) Platform independent Encrypted pluggable communications.

UFO:AI is a 3d turn based strategy game inspired by the X-Com series by Microprose.

An OpenGL racing game featuring Tux, the Linux mascot. The goal of the game is to slide down a snow- and ice-covered mountain as quickly as possible.(C++,TCL) [Linux,MacOS X]

This open source application allows users to run a free email/live online chess chess web site.

A puzzle game based on oxyd. Runs on Windows, OS X, and most open source operating systems. (C++) [GPL]

Commentary, analysis and research of sci-fi single player first person shooters.

Csharks is a game developing firm in India which creates games in multiple platforms (DirectX,Flash,J2ME,Director,OpenGL) at tight deadlines, at International quality levels.

Small apps and games developments.

This game is a fast paced arena sport where players try to explode the opposition using a short-fused potato bomb.

A multiplayer, web-based game of space exploration and economic competition. It is a game of strategy, role-playing, combat, and diplomacy.

Official Site of The Brave New World game an OpenSource Game Project. The game is real time strategy. (Delphi)

Colonize Europe in this Java based, open source game. Live an adventure in the 12th century world.

Free games, open source and tutorials for various programming languages.

Eclipse is a driving and FPS style shooting game with comprehensive campaign. Story takes place on surface of Moon. OpenGL graphics and original soundtrack. Single-player game only.

SpyWar is an online startegic game in development phase.

Free isometric real-time MMORPG. 2d/3d graphics, 3d sound effects, digital ambient music.

A portal about Open Source Gaming. Newsfeed, articles, downloads, forum, links.