Turn-based space empire and galactic conquest (4X) computer game.
- Home: http://www.freeorion.org/index.php/Main_Page, https://sourceforge.net/projects/freeorion/
- Media: https://en.wikipedia.org/wiki/Master_of_Orion#External_links
- State: beta
- Download: http://www.freeorion.org/index.php/Download
- Keywords: TBS
- Code repository: https://github.com/freeorion/freeorion.git, https://svn.code.sf.net/p/freeorion/code/ (svn)
- Code language: C++, Python
- Code license: GPL-2.0
- Build system: CMake