Empyrion Galactic Survival
To get me in the mood for No Man's Sky in June, I decided to buy Empyrion Galactic Survival on Steam. It was about $18 so not a pricey buy. Empyrion reminds me of ARK without dino taming. It has exploration, resource farming, base building, ship building, and battles. Eventually, you get a ship strong enough to go into orbit. Then, you need to build a bigger ship to start exploring the galaxy.
Single player, coop, or multiplayer are all available.
I'm going to start playing it tonight on solo unless anyone wants to try coop.