Real Time Strategy game engine supporting early Westwood classics
Gideros Release version
Open source voxel world
Ad free open source TV guide for more than 1000 channels.
An award-winning drawing program for children of all ages
FlightGear Flight Simulator: free open-source multiplatform flight sim
A free transportation simulator game
A strategy game with a high fantasy theme
Chess Database and PGN viewer
Odamex is a free, cross-platform, modern client-server Doom engine
4X Space Strategy Game
Arianne is an engine to develop multiplayer online games like Stendhal
Cooperative multiplayer graphical RPG and adventure game
Enigma is a puzzle game
Game engine supporting many 3D/2D formats and graphic effects
Game library for Pascal
Action RPG that's easy to mod
Cross-platform real-time strategy game (3D)
X3D is the open-standard format for 3D graphics scenes on the Web.
Online War system for IL-2 Sturmovik and Iron Front in ArmA 2