Xash3D FWGS engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Free game engine for development of desktop, mobile, and web games
Solar2D Game Engine main repository (ex Corona SDK)
A dead simple 2D game engine for Go
Fast and lightweight JavaScript game engine built on WebGL and glTF
A fresh & lightweight javascript game engine
Cocos simplifies game creation and distribution with Cocos Creator
Stride (formerly Xenko), a free and open-source cross-platform C# game
Ct.js is a desktop game engine that makes learning programming fun
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
Open source library for creative expression on the web, desktop, etc.
Cross-platform game engine in Rust
Zig game engine & graphics toolkit
Kotlin extensions for the libGDX game framework
Go bindings for raylib, a simple and easy-to-use library
GemRB is a portable open-source implementation of the Infinity Engine
Orx: Data-Driven Game Engine
Ze Text Adventure game Builder : Create as you play !
An isometric arcade-style game of skill, puzzles and exploration
ZDoom 2.8.1 fork focusing on modernisation, performance and stability
Cross-platform 2D game engine (+ full OpenGL, +full OpenGL ES )