Multi Theft Auto is a game engine
Descent 3 by Outrage Entertainment
The fastest AI powered Aimbot
Command & Conquer: Remastered Collection
A free/open source client and automation tool for Ragnarok Online
Home theater software and entertainment hub for digital media
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Open source clone of the Age of Empires II engine
Voxel game-creation platform with easy modding and game creation
Community effort to maintain and improve Jedi Academy (SP & MP)
Open Source MMORPG Framework
Recreation of the classic Grand Theft Auto III game executable
Map Pixel Art Generator for Minecraft
Multi-platform 2D and 3D game engine
Powerful, mature open-source cross-platform game engine for Python
3D game engine with lua scripting
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Lossless Scaling Frame Generation on Linux
Source code repository of the FreeOrion project
A shield for the Arduino Mega that can back up video game cartridges
A game engine with an emphasis on real-time cutting-edge solutions
Doom-based AI research platform for reinforcement learning
FlightGear Flight Simulator: free open-source multiplatform flight sim
Every creative journey starts with Unity Hub
4X Space Strategy Game