CIV 5 has fairly low standards to run on a computer, and that isn’t too surprising, considering it was released more than a decade ago. Available for Windows and macOS as well as Linux, you’ll need a minimum of 2GB memory for Windows or 4GB for Mac. An Intel Duo 1.8 GHz or 1.8GHz Quad-Core processor is needed. Just 8 GB of free hard drive space will run CIv 5. Of course, you can read specification requirements on Steam.