Asphyre is a cross-platform framework for Delphi and FreePascal.
Event driven concurrent framework for Python
IRB is a game creation toolkit
3D .NET engine for Windows, Linux, Mac
computer simulation for my raspberry pi
Single-/multi-player card game Mau Mau (similar to UNO®)
evolution for vegastrike SpaceSim/Combat/Trade game
Mahasona engine is an open source game engine.
Java decentralized cross-platform network multiplayer game engine
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Free strategy browsergame engine.
AutoTeach makes kids study and learn in exchange for internet access.
a game library to develop audio games
Modular Gaming Open Source Persistent Browser Based Game Framework
A multiplatform game engine for interactive fiction experiences
2D Game Engine, based on OpenGL and focused on Isometric Games
Scriptable frontend for media applications.
Open source network game service
Pear3DEngine is a modern and modular 3D development framework
C-Lesh is a game programming language for 2D games.
DiaT is a Textadventure
An HTML web game platform