Cocos simplifies game creation and distribution with Cocos Creator
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Cross-platform 2D and 3D game engine with modular architecture
3D and 2D game engine written in Rust
An OpenGL RTS game engine written in C
Free game engine for development of desktop, mobile, and web games
3D Game engine with editor
Open game and rendering engine packed into a JavaScript framework
A fresh & lightweight javascript game engine
Stride (formerly Xenko), a free and open-source cross-platform C# game
3D game engine with lua scripting
Vivid3D is a C++ IDE/3D engine, with python scripting.
SDL based generic 2D game engine
A free 3D game engine to create games and realtimes scenes for Windows
MIT Licensed Open Source version of Torque3D from GarageGames
3D C++ Game Engine - yet another open source game engine
2D Game Engine
A 2D game engine and level editor
2D Game Engine with Lua Scripting made on top of SFML
Web powered cross-platform 3D, WebXR game engine
Built to be ease of use, with no programming knowledge, Multi-platform