Pontoon in c - source code and header file
online 4X browser game engine
2D ARPG Engine
Web based Game server control panel
Advanced rhythm game for Windows, Linux and OS X
A public domain cross platform 3D game
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
simple backgammon to be played over the net
Log and Play Retro Controller Inputs
Sudoku engine for .NET 4.0 and up
evolution for vegastrike SpaceSim/Combat/Trade game
Some pythons plugins to enhance fantasy maps creation with QGis
Open-source 2D Snake Game with 4 different modes of gameplay.
XNA based game engine completely written in c#
A roguelike game engine/editor