P.S it is multiplayerish in the sense of passing a save back and forth with a game master. http://aurora2.pentarch.org/index.php?topic=7942.0 (cheers for pointing that out.)
The game has been compared to playing DF in space.. I'll addon a plus to that.
Aurora is a 4X (eXpand, eXplore, eXploit, and eXterminate) science fiction strategy game. Players develop their interstellar empire from the humble beginnings on their homeworld to conquer the universe, or be pummeled into the ashes of history by opposing races. Some say it has the graphical charm of an income tax assistant software from the late nineties, but a playing depth that more than rivals any commercial 4X game. Aurora is different because it places emphasis on fleet operations and detailed tactical combat. (from the wiki)
http://aurora2.pentarch.org/index.php?topic=5663.0 (download/full install and latest patch)
Aurora4x is not your typical 4x game, below is a list of features as far as I've encountered.)
There are empire themes.(Terran Federation ftw)(WOULD YOU LIKE TO KNOW MORE?)
► Show Spoiler