HTML5 Phigros chart player/simulator
RPG Maker 2000/2003 and EasyRPG games interpreter
Universal Aim Assist Framework
Aim assistance for blocks and mobs
Open-source Android/Desktop remake of Civ V
Doom-based AI research platform for reinforcement learning
One of the best Prodigy hacks
An open source re-implementation of RollerCoaster Tycoon 2
Open-source rhythm game
Classic overhead run-and-gun game
The Oldschool Runescape API wrapper that does more
Archipelago Multi-Game Randomizer and Server
Voxel game-creation platform with easy modding and game creation
The Ren'Py Visual Novel Engine
Widelands is a free, open source real-time strategy game
Endless Sky is a sandbox-style space exploration game
The Shiptest Codebase
Access GameLift resources and integrate GameLift into your Unity game
Play chess from your terminal
A game of dungeon exploration, combat and magic
You can make it - Open Source MMORPG Platform
Minecraft map editor and mod
3D space trading and combat game
Multi Theft Auto is a game engine
Fully async, multithreaded, predictive, open source, 3.01 reach