Fast and lightweight JavaScript game engine built on WebGL and glTF
Cross-Platform C++ 2D/3D game engine
Cocos simplifies game creation and distribution with Cocos Creator
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Cross-platform 2D and 3D game engine with modular architecture
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Multi-platform 2D and 3D game engine
Zig game engine & graphics toolkit
LayaAir is an open-source 2D/3D engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
A game engine powered by python and panda3d
UZDoom is a feature centric port for all Doom engine games
3D Engine c++
Voxel game engine in C++ with OpenGL
A modular Common Lisp game engine
3D and 2D game engine written in Rust
Free game engine for development of desktop, mobile, and web games
3D Game engine with editor
Game engine supporting many 3D/2D formats and graphic effects
3D Procedural Game Engine Using OpenGL
Powerful, mature open-source cross-platform game engine for Python
Voxel game-creation platform with easy modding and game creation
Stride (formerly Xenko), a free and open-source cross-platform C# game
3D game engine/framework in C, with Luajit and Python bindings now