Stride (formerly Xenko), a free and open-source cross-platform C# game
Free, open source game engine online
A game framework written with osu! in mind.
A dead simple 2D game engine for Go
Free, cross-platform 2D game engine powered by Haxe and OpenFL
MIT Licensed Open Source version of Torque3D from GarageGames
A modular Common Lisp game engine
Urho3D Game engine
dhewm 3 main repository
A fresh & lightweight javascript game engine
Free and Open Game Programming Language for Windows and GNU/Linux
Free Android 2D OpenGL Game Engine
A multi core friendly rigid body physics and collision detection lib
3D C++ Game Engine - yet another open source game engine
A cross-platform, open-source, pure C game engine for mobile game
OpenSAGE is a free, open source re-implementation of SAGE
A cross-platform 2D game engine
Download Rainwayapp Play anywhere Your PC games on all your favorite
Full featured MUD server with all the trimmings.
Game engine supporting many 3D/2D formats and graphic effects
The Atomic Game Engine is a multi-platform 2D and 3D engine
High performance UI layout library in C
An easy to use 2D HTML5 game engine written in TypeScript
Open-source, cross-platform, C++ game engine for creating 2D/3D games