Endless Sky is a sandbox-style space exploration game
Games for tomorrow's programmers
The source code to VVVVVV
Fast and lightweight JavaScript game engine built on WebGL and glTF
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Rcon client for Minecraft
Open Source MMORPG Framework
A rhythm game made with HaxeFlixel
A game engine with an emphasis on real-time cutting-edge solutions
Traditional roguelike game with pixel-art graphics
A lightweight game server framework implemented with Actor Model
A sharp, readable, vector-y version of Monocraft
An open source flight dynamics & control software library
Source code repository of the FreeOrion project
Open source simulation game based on Transport Tycoon Deluxe
CTFs as you need them
Cross-platform 2D and 3D game engine with modular architecture
An open source implementation of the Ultima Online Classic Client
Free game engine for development of desktop, mobile, and web games
Godot game template and component-based framework
A 2D rigid body physics engine for the web
Self-hosted CMS platform based on the Laravel PHP Framework
Build multiplayer web games played by millions
New Modpack with Gregtech, Thaumcraft and Witchery
A tech mod for Minecraft themed around the magic of nature