RPG Maker 2000/2003 and EasyRPG games interpreter
HTML5 Phigros chart player/simulator
Home theater software and entertainment hub for digital media
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
Archipelago Multi-Game Randomizer and Server
The Ren'Py Visual Novel Engine
One of the best Prodigy hacks
Classic overhead run-and-gun game
The Shiptest Codebase
Endless Sky is a sandbox-style space exploration game
Doom-based AI research platform for reinforcement learning
The Oldschool Runescape API wrapper that does more
Voxel game-creation platform with easy modding and game creation
RetroArch is a frontend for emulators, game engines and media players.
Access GameLift resources and integrate GameLift into your Unity game
Fully async, multithreaded, predictive, open source, 3.01 reach
Multi Theft Auto is a game engine
You can make it - Open Source MMORPG Platform
A game of dungeon exploration, combat and magic
3D space trading and combat game
Media Player and Media Tool Kit for Linux using Kulina Graphics
Free and open source real-time strategy game