lua dev plugin for unreal engine 4 or 5
Gideros Release version
Arianne is an engine to develop multiplayer online games like Stendhal
Orx: Portable Game Engine
Game engine supporting many 3D/2D formats and graphic effects
Java Settlers
8-bit Graphical API for Java
Source code of the chapters of the book 3D Game Development with LWJGL
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.
Hungry Hero is an open source Flash game built on Starling Framework.
A truly extensible cross-platform game engine
AMOS BASIC reimplementation in Java
Game framework on top of Python, Panda3D and Twisted
also download updates from files section
Read and write PGN format and test moves for legality.
The Lambda-Engine is a cross platform game engine.