Fast, user-friendly cross-platform custom launcher for Minecraft
Xash3D FWGS engine
A complete 3-D game development suite written in Java
s&box is a modern game engine, built on Valve's Source 2
RetroArch is a frontend for emulators, game engines and media players.
Open source Old School RuneScape client
A game engine powered by python and panda3d
Open source simulation game based on Transport Tycoon Deluxe
3D space trading and combat game
API and runtime that allows access to VR hardware
Real Time Strategy game engine supporting early Westwood classics
Games for tomorrow's programmers
A nonsense activity generator
An open source implementation of the Ultima Online Classic Client
A dead simple 2D game engine for Go
An updated version of the classic "Basic Computer Games" book
3D game engine/framework in C, with Luajit and Python bindings now
The Pokémon API
Home theater software and entertainment hub for digital media
Flexible level editor
Simple GTK# Paint Program
lua dev plugin for unreal engine 4 or 5
Recreation of the classic Grand Theft Auto III game executable
A lightweight game server framework implemented with Actor Model