An HTML web game platform
Game framework on top of Python, Panda3D and Twisted
Free strategy browsergame engine.
Little game background framework in java.
A cross-platform Java 2D graphics library using OpenGL.
A cross platform 3d c++ game engine
Card, board & tiles making Software
8-bit Graphical API for Java
A very small multi-platform game engine for creating desktop games.
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C-Lesh is a game programming language for 2D games.
CM Game Development Kit
High-efficiency minimalist C++ wrapper for OpenGL 4.3