If you enjoy building games where you're not just making pretty stuff but also considering the physics of your designs, you cannot go wrong here. Avorion gives you a huge amount of freedom in an easy to learn editor, to build your own ships and space stations. There's a huge amount of satisfaction in designing, then building a ship that you can fly around in. There's also a huge galaxy full of factions, economy and trading. I got absorbed in the game just chilling out, designing spaceships for weeks. The devs have recently overhauled the game with 2.0 & made it really intuitive for new players too. I hope they continue making many more games with as much love and care as this one!