OpenRA is a Libre/Free Real Time Strategy game engine supporting early Westwood games like Command & Conquer and Command & Conquer: Red Alert.
Please note: OpenRA is currently at an alpha release stage. If you encounter a problem, please report it to the IRC channel or the bugtracker.
If you wish to host a multiplayer game, you must forward a port on your router to allow incoming connections. The default port is 1234.
OpenRA should run on any modern PC running Windows, Mac OS X or Linux. Requires Microsoft .NET Framework v3.5 SP1 or later; or an up-to-date version of Mono.