Solar2D Game Engine main repository (ex Corona SDK)
FPS Unlocker for Roblox
Android real-time display control software
Desktop/Android/HTML5/iOS Java game development framework
Stream switch games to your PC via USB or network
A cross-platform PSP emulator
The game engine for everyone
RenderDoc is a stand-alone graphics debugging tool
Open-source engine for Heroes of Might and Magic III
Memory Efficient Serialization Library
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
websocket and http client and server library, with TLS support
The open-asset-importer-library repository
Urho3D Game engine
LÖVE is an awesome 2D game framework for Lua
Open source Cardboard SDK and samples
An open source C++ game engine
GemRB is a portable open-source implementation of the Infinity Engine
Orx: Portable Game Engine
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
3D modeler, 3D game maker, 3D demo maker
A promising chess program
Computer opponent for the board game Blokus.
Old style soccer game with many exciting features
3rd Party Video Games Developer: MetalManGames, titles of games