Compatibility tool for Steam Play based on Wine and other components
UCI chess engine
A Native GOG and Epic Games Launcher for Linux, Windows and Mac
C# application with primary purpose of farming Steam cards
Real Time Strategy game engine supporting early Westwood classics
Open source Old School RuneScape client
Fast and lightweight JavaScript game engine built on WebGL and glTF
Flexible level editor
Endless Sky is a sandbox-style space exploration game
New Modpack with Gregtech, Thaumcraft and Witchery
Free and open source real-time strategy game
A refreshingly simple data-driven game engine built in Rust
A Minecraft mapping tool that creates 3D models of your Minecraft
RetroArch is a frontend for emulators, game engines and media players.
Voxel game engine in C++ with OpenGL
Build multiplayer web games played by millions
A retro game engine for Python
Gideros Release version
Distributed server for social and realtime games and apps
Widelands is a free, open source real-time strategy game
The flexible game engine
A modular Common Lisp game engine
Open Source real-time strategy game engine for early Westwood games
Naev is a 2d action/rpg space game, action, rpg and simulation
Open Source MMORPG Framework