lua dev plugin for unreal engine 4 or 5
Gideros Release version
Arianne is an engine to develop multiplayer online games like Stendhal
Game engine supporting many 3D/2D formats and graphic effects
Orx: Portable Game Engine
Java Settlers
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
8-bit Graphical API for Java
Source code of the chapters of the book 3D Game Development with LWJGL
Multidocument automation by templates - for sphinx, mkdocs, epydoc ...
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Event driven concurrent framework for Python
3D .NET engine for Windows, Linux, Mac
evolution for vegastrike SpaceSim/Combat/Trade game
Gives agents personality, moods, emotions and emotional attachments.
A generic 2D engine for any kind of game
AutoTeach makes kids study and learn in exchange for internet access.
A world editor for HGE game engine written in python and uses OpenGL.
Pygrid is an open-source and cross-platform pygame/python 2D engine.
A graphics engine + toolkit.
AMOS BASIC reimplementation in Java
Game framework on top of Python, Panda3D and Twisted