Voxel game engine in C++ with OpenGL
Powerful, mature open-source cross-platform game engine for Python
lua dev plugin for unreal engine 4 or 5
Mangos ZERO is a server for World of Warcraft
Parse and serialize minecraft packets, plus authentication
RPG Maker 2000/2003 and EasyRPG games interpreter
A downloadable game for Windows, macOS, and Linux
Write your game with TypeScript in UE or Unity
Open-source OpenGL/SDL2 reimplementation of Sid Meier's Alpha Centauri
A game engine with an emphasis on real-time cutting-edge solutions
Recreation of the classic Grand Theft Auto III game executable
dhewm 3 main repository
Cross-platform 2D and 3D game engine with modular architecture
Widelands is a free, open source real-time strategy game
Descent 3 by Outrage Entertainment
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A multi core friendly rigid body physics and collision detection lib
3D game engine with lua scripting
The ioquake3 community effort to continue supporting/developing id's
Multi-platform 2D and 3D game engine
Free game engine for development of desktop, mobile, and web games
Cross-platform, open source, and super fast MUD client with scripting
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
3D Game engine with editor
A shield for the Arduino Mega that can back up video game cartridges