After pulling the OpenRA source, the first thing you’ll need to do is to make sure the Ijw.DirectX submodule is updated and the Ijw.Framework submodule inside the Ijw.DirectX submodule is updated as well. The Ijw.Framework submodule should be built in both release and debug modes and requires NUnit (http://www.nunit.org/index.php) to build unless the IjwFrameworkTests project is unloaded. After the Ijw.Framework submodule is built, the Ijw.DirectX submodule should be built as well. After that you should be all good to go ahead and build OpenRA. To run OpenRA, several files from the original game’s install need to be copied to the root of the project directory. These are "redalert.mix", "conquer.mix", "temperat.mix", "interior.mix" and "snow.mix". Red Alert has been released by EA Games as freeware so it shouldn’t be too hard to find a legal copy of the CD images. Unfortunately the installer is 16-bit and so won’t run on modern 64-bit operating systems. This can be worked around by using the Red Alert Setup Manager (http://ra.afraid.org/html/downloads/utilities-3.html). Make sure you apply the no-CD protection fix so all the files needed are installed to the hard drive. Other Notes: * You'll need the DirectX 9 Redist installed. I know you think you have DirectX 9.0c installed, but you also need d3dx9_*.dll, which are *not* included by default. This is the package you want: http://www.microsoft.com/downloads/details.aspx?familyid=04AC064B-00D1-474E-B7B1-442D8712D553 If you don't have the DX9 Redist, you'll get an exception somewhere in Ijw.DirectX when you try to run the game. * When someone patches Ijw.DirectX, you need to do `git submodule update` in your OpenRA tree. This has so far happened *once*. * You'll also need the Visual C++ 2008 SP1 Redist. You can get this from Microsoft: http://www.microsoft.com/downloads/details.aspx?familyid=A5C84275-3B97-4AB7-A40D-3802B2AF5FC2