FreeOrion does not yet have official system requirements, and what it currently needs is highly likely to fluctuate throughout the development.
Recent versions likely will run best with at least 1 GHz processors and at least 2 GB of RAM, but requirements testing has not be conducted to determine this information. Earlier versions of FreeOrion have been reported to run on a 600MHz machine with 128 MB internal memory, however this did not constitute a good playing experience.
Additionally, FreeOrion uses OpenGL, meaning you should have a 3D accelerator card with support for OpenGL 2.0 or greater. Systems with OpenGL 1.5 may work with some graphical options turned off, however. A screen resolution of 1024x768 or larger is very strongly recommended, though the game can be run, awkwardly, at lower resolutions.
If you have experience running FreeOrion on a particular system and thought it was a bit slow, please add your system details here or post about it in the forums so that we can accumulate some more recent and useful guidelines of reasonable specifications.
- The Windows versions of FreeOrion generally runs on Windows XP (Service Pack 2 or later), Windows Vista or Windows 7. Earlier versions of FreeOrion were reported to run on Windows 2000 as well. Windows 8 will likely also run FreeOrion recent releases, and reports of testing would be appreciated.
- The Mac OSX versions of FreeOrion requires an Intel Mac with OSX 10.9 or later and OpenGL 2.0 support.
- The Linux versions of FreeOrion reportedly work on several modern Linux distributions on systems with OpenGL 2.0 support.