A retro game engine for Python
Voxel game-creation platform with easy modding and game creation
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A high-performance, industry-standard 2D physics engine built on Box2D
Fast and lightweight JavaScript game engine built on WebGL and glTF
A 2D rigid body physics engine for the web
Cocos simplifies game creation and distribution with Cocos Creator
Free game engine for development of desktop, mobile, and web games
The HTML5 Creation Engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Open source library for creative expression on the web, desktop, etc.
The game engine for everyone
High performance UI layout library in C
The ioquake3 community effort to continue supporting/developing id's
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
3D game engine/framework in C, with Luajit and Python bindings now
The Tiny JavaScript Game Engine That Can!
A dead simple 2D game engine for Go
Cross-platform game engine in Rust
A completely free, open-source, 2D game engine
3D and 2D game engine written in Rust
JavaScript-based game engine designed to empower developers
Full featured MUD server with all the trimmings.
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented