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