OpenRA
OpenRA 20120825-2 for Windows
Caleb Anderson
This is an open source version of the classic Command and Conquer games.
OpenRA is an Open Source, Real Time Strategy game engine. Its primary focus is on creating an extendable platform to recreate games in the style of the early Command & Conquer games. Are you ready for some real time strategy?

Game Summary:

You can run OpenRA on Windows operating systems. OpenRA is a game developed by Caleb Anderson and it is listed in the category. OpenRA is a free game and it is fully functional for an unlimited time although there may be other versions of this game.

Alternatives in on Windows