GEDKeeper - opensource and crossplatform genealogy management program
Enigma is a puzzle game
RTSish Game Engine
A free 3D game engine to create games and realtimes scenes for Windows
A cross platform Lua based game engine
3D-Accelerated open-source DOOM engine
EDGE is an advanced DOOM source port
Fallout 4 Configurator
Single-/multi-player card game Mau Mau (similar to UNO®)
c# lua bind with unity3d project for game development
MultiVice - is a fully customizable multiplayer modification for Grand
Sunset of Blood Repository
A complete 2D Game Engine with built in drag and drop editor