A free/open source client and automation tool for Ragnarok Online
Free game engine for development of desktop, mobile, and web games
A fun realistic multiplayer free-and-open-source first-person-shooter!
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
Cross-platform real-time strategy game (3D)
Urho3D Game engine
3D C++ Game Engine - yet another open source game engine
3D video music media player lyrics subtitles etc...
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
DirectX 1-11 to OpenGL wrapper
A traditional top-down OpenGL car racing game
Star Trek Web browser game
C++ Framework for slot machine games
SuperWikia: The Runtime/Realtime Environment for Codesmiths