Cross-Platform C++ 2D/3D game engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
Cross-platform 2D and 3D game engine with modular architecture
Cocos simplifies game creation and distribution with Cocos Creator
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Multi-platform 2D and 3D game engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Flax Engine, multi-platform 3D game engine
Game engine supporting many 3D/2D formats and graphic effects
Zig game engine & graphics toolkit
LayaAir is an open-source 2D/3D engine
A complete 3-D game development suite written in Java
A game engine powered by python and panda3d
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Voxel game engine in C++ with OpenGL
3D Game engine with editor
A modular Common Lisp game engine
Java/JavaFX/Kotlin Game Library (Engine)
Free game engine for development of desktop, mobile, and web games
3D and 2D game engine written in Rust
Reusable code for building video games with Jogamp NEWT
3D game engine/framework in C, with Luajit and Python bindings now
Powerful, mature open-source cross-platform game engine for Python
3D Procedural Game Engine Using OpenGL
GemRB is a portable open-source implementation of the Infinity Engine