Cocos simplifies game creation and distribution with Cocos Creator
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Open game and rendering engine packed into a JavaScript framework
Voxel game engine in C++ with OpenGL
Cross-Platform C++ 2D/3D game engine
Cross-platform 2D and 3D game engine with modular architecture
Stride (formerly Xenko), a free and open-source cross-platform C# game
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Multi-platform 2D and 3D game engine
A modular Common Lisp game engine
Open source library for creative expression on the web, desktop, etc.
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Zig game engine & graphics toolkit
3D and 2D game engine written in Rust
Cross-platform game engine in Rust
Powerful, mature open-source cross-platform game engine for Python
A tool to easily transform Unreal Engine games into VR experiences
Vivid3D is a C++ IDE/3D engine, with python scripting.
Game engine supporting many 3D/2D formats and graphic effects
The multiplayer game engine
MIT Licensed Open Source version of Torque3D from GarageGames
Vivid is a modern C++ 3D engine using OpenGL4+
Go 3D Game Engine
3D C++ Game Engine - yet another open source game engine