dhewm 3 main repository
Voxel game-creation platform with easy modding and game creation
Open-source engine for Heroes of Might and Magic III
The Ren'Py Visual Novel Engine
Recreation of the classic Grand Theft Auto III game executable
A game engine powered by python and panda3d
Magic Another Game Engine
Real Time Strategy game engine supporting early Westwood classics
Xash3D FWGS engine
Open source clone of the Age of Empires II engine
Solar2D Game Engine main repository (ex Corona SDK)
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Cross-platform 2D and 3D game engine with modular architecture
A completely free, open-source, 2D game engine
Cross-platform game engine in Rust
3D and 2D game engine written in Rust
Cross-Platform C++ 2D/3D game engine
GemRB is a portable open-source implementation of the Infinity Engine
A modern, cross-platform Quake game engine based on FitzQuake.
Game engine supporting many 3D/2D formats and graphic effects
API (C#) for simulating certain aspects of a ZX spectrum for porting.
Embeddable unity game engine view for Flutter
2D game development library for Ruby and C++