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FreeOrion is a free, open source, turn-based space empire and galactic conquest (4X) computer game being designed and built by the FreeOrion project. FreeOrion is inspired by the tradition of the Master of Orion games, but is not a clone or remake of that series or any other game.

Download FreeOrion v0.5 for Windows or macOS 10.12+
Download FreeOrion Test Builds for Windows, or macOS.

Community Forums – GitHub – Twitter – Reddit Introduction Introduction – Screenshots – Videos – License FAQ – Philosophy Playing FreeOrion Download – Support – System Requirements Quick Play Guide – Multiplayer Project Overview and Contributing How to Help – Compile – Python Development (AI & Content) – Content Scripting Tutorial; Recent Development Activity – Source Code Repository – Reporting Bugs Donations Misc Space Strategy Games – Media Coverage

Latest News: FreeOrion 0.5 has been released - Windows and macOS installers are available on SourceForge and on GitHub. Linux users can use the snap package we provide on snapcraft.io (please be patient, it may take a few days until the 0.5 snap is available), or acquire from your distribution if available. If neither is possible, Linux users will need to build from source. Source tarballs are available from GitHub (please use the source tarball file with version and build number in the filename, not the links automatically created by GitHub). See the Compile page for more instructions. See this post for release notes. Vezzra 18:40, 2 April 2023 (UTC) FreeOrion 0.5 release candidates now available on Snapcraft - 0.5 release candidate builds for Linux are now available on Snapcraft. For more information, see here. Vezzra 16:20, 26 February 2023 (UTC) Release candidates of FreeOrion 0.5 available! - Release candidate builds for 0.5 are now available on SourceForge for Windows and macOS. Testing and feedback on the forums for these candidates are appreciated. Vezzra 19:25, 16 February 2023 (UTC) FreeOrion on Flathub - FreeOrion is now available on Flathub: https://flathub.org/apps/details/org.freeorion.FreeOrion Vezzra 19:10, 31 August 2021 (UTC) more news...