One framework for creating powerful cross-platform games
A simple and easy-to-use library to enjoy videogames programming
Gideros Release version
You can make it - Open Source MMORPG Platform
Open source library for creative expression on the web, desktop, etc.
Open Source MMORPG Framework
Arianne is an engine to develop multiplayer online games like Stendhal
Game engine supporting many 3D/2D formats and graphic effects
A distributed graph deep learning framework.
Free and Open Game Programming Language for Windows and GNU/Linux
X3D Prototypes for the SMUOS Component
Event driven concurrent framework for Python
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
Single-/multi-player card game Mau Mau (similar to UNO®)
evolution for vegastrike SpaceSim/Combat/Trade game
Java decentralized cross-platform network multiplayer game engine
Mahasona engine is an open source game engine.
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Free strategy browsergame engine.
Educational framework for OpenGLES, OpenCL and OpenAL