Unity3D Client And C# Server Framework
Ze Text Adventure game Builder : Create as you play !
Vivid3D is an open-source 3D engine with powerful 2D UI.
2D Game Engine
Modern 3D engine and IDE written using C# and C++.
Reactive extensions for Unity
Portable game engine with main focus on point-and-click adventures
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
3D .NET engine for Windows, Linux, Mac
c# lua bind with unity3d project for game development
XNA based game engine completely written in c#
A cross-platform game framework based on OpenGL and GObject.
Open source network game service
Investigo - DX9 Performance and Debugging Toolkit
Ragnarok Cliente nativo para Gnu/Linux