FPS Unlocker for Roblox
Scripting platform, modding framework and VR support for RE Engine
Stream switch games to your PC via USB or network
Android real-time display control software
Desktop/Android/HTML5/iOS Java game development framework
A cross-platform PSP emulator
Simple and Fast Multimedia Library
Multi Theft Auto is a game engine
Injectable LUA scripting system, SDK generator, live property editor
GUI for downloading/managing homebrew apps for video game consoles
The game engine for everyone
Dust3D is a cross-platform open-source 3D modeling software
Powerful, mature open-source cross-platform game engine for Python
Open source clone of the Age of Empires II engine
Solar2D Game Engine main repository (ex Corona SDK)
3D Procedural Game Engine Using OpenGL
Free and open source real-time strategy game
Open Source MMORPG Framework
Flax Engine, multi-platform 3D game engine
An open source flight dynamics & control software library
Cross-Platform C++ 2D/3D game engine
Cross-platform, open source, and super fast MUD client with scripting
RPG Maker 2000/2003 and EasyRPG games interpreter
Write your game with TypeScript in UE or Unity
Mangos ZERO is a server for World of Warcraft