FreeOrion e new free version of the well known game Master of Orion. The game is galactic strategy. Conquer new planets, and keep yours from being taken. Develop technologies. Build ships and fight. There is one goal - to conquer the galaxy.
The game works on XP, Vista, Windows 7, 8 and 10. The only requirement for the XP windows is to have installed SP2 (service pack 2). To operate, the game needs .NET Framework 2 (or newer) and OpenGL 2.1 installed.
If you are interested in Masters of Orion like games, you can try Birth of the Empires as well.