Well I didn't even know this existed until I saw this thread.
Got it today, enjoying it so far. So far it seems like Terraria with a sci-fi twist.
I'm still in the "I don't know what I should be collecting or looking for, so I shall explore and collect everything" stage, which is always my favorite part of games like this. But there's also quests for learning how to build and hunt and stuff, so I don't feel completely helpless. Very nice.
Also I find it funny that the futuristic laser beam thing you find on your ship is less effective than a good old-fashioned stone pickaxe.