An open source implementation of the Ultima Online Classic Client
A free/open source client and automation tool for Ragnarok Online
Free and open source real-time strategy game
Real Time Strategy game engine supporting early Westwood classics
Open-source Android/Desktop remake of Civ V
Tactical 2D shooter in fishy pixels style. Made with Rust-lang
Multi Theft Auto is a game engine
Gradient Bang is an online multiplayer universe
Do virtual gear shifting (and more) in any rider app
Cross-platform, open source, and super fast MUD client with scripting
Free, open source game engine online
Chess Database and PGN viewer
Odamex is a free, cross-platform, modern client-server Doom engine
Free online tool to test and diagnose your game controller instantly.
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Retro style, multi-platform soccer game
A 2D multiplayer space shooter game
An enhanced version of 7K:AA (Seven Kingdoms: Ancient Adversaries).
Web-based Cloud Gaming service for Retro Game
Character animation system for games and simulations.
Code for the paper "Neural MMO: A Massively Multiagent Game..."
An End-To-End, Lightweight and Flexible Platform for Game Research
Compatible client of Ace of Spades 0.75
Based on the raedwulf-et project