Real Time Strategy game engine supporting early Westwood classics
Game engine supporting many 3D/2D formats and graphic effects
lua dev plugin for unreal engine 4 or 5
Orx: Portable Game Engine
Arianne is an engine to develop multiplayer online games like Stendhal
Old-school 2D game engine
SDL based generic 2D game engine
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Quake PAK file utility
A cross platform Lua based game engine
8-bit Graphical API for Java
Source code of the chapters of the book 3D Game Development with LWJGL
Portable game engine with main focus on point-and-click adventures
Build Cross-platform Applications
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
3D .NET engine for Windows, Linux, Mac
Flexible and easy-to-use 2d game engine
An advanced flexible game engine for Java.
THIS SOFTWARE IS IN PRE-PRE-PRE-PRE-ALPHA. So don't really download it
Built to be ease of use, with no programming knowledge, Multi-platform
Free strategy browsergame engine.
Multimedia asset management and manipulator for Étoilé
A 2D Adventure Game & Engine
A generic 2D engine for any kind of game