FreeOrion is a free, open source, turn-based space empire and galactic conquest (4X) computer game. The game is designed and built by the FreeOrion project, inspired by the tradition of the Master of Orion games. However, it’s not a clone or remake of that series or any other game. The project provides binary installers for Windows and OS X, but Linux users have to compile from source. The following instructions show how to compile and install FreeOrion on Fedora.

FreeOrion Game Play

FreeOrion: Prerequisites

To compile, first install the following prerequisites. (correction – added python-devel thanks to comment)

sudo dnf install python-devel cmake libvorbis-devel boost-devel zlib-static freetype-devel mesa-libGL-devel mesa-libGLU-devel SDL2-devel glew-devel openal-soft-devel
sudo dnf groupinstall "C Development Tools and Libraries"

Now download the source from GitHub.

git clone

FreeOrion: Build and install

Create a directory for the build.

mkdir freeorion_build
cd freeorion_build/

Now build FreeOrion. If you have a multi-core processor, you can add -j# to the make command. Substitute # with the number of cores on your system as below. If you don’t know, it’s safe to leave this option off.

cmake ../freeorion
make -j4
sudo make install

You can now find the game in your applications list. In GNOME Shell, hit the logo button, or move your mouse to the Activities hot corner to find it in the list:

FreeOrion in Application List

The game has a built-in guide (‘Pedia) with valuable instructions on how the game is played. Below you can also find a game play and tutorial video.

There are many more videos posted on YouTube. In addition, there is a quick start guide available on-line. Enjoy the game!