Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.
That is so much cooler than the original. Really clever use of it too, letting the boat be used on land. You got an inventers heart. Can you make it so you can click on the thing Thing magneted and make it stay put in the air or move to set place.