Avorion

Avorion is a procedurally generated sci-fi sandbox where players start at the edge of the galaxy and must find their way to its core. Players build their own ships with which they can explore the galaxy, trade and fight. The spaceships are usually large, with crews, turrets and power systems that you must manage. The galaxy becomes more hostile, but also more rewarding, as players get closer to its core. You can play however you want: as a mercenary, freighter captain, admiral, raider or pirate - it's up to you.