I love when this type of game lands on my "to play" pile. MirrorMoon EP doesn't ask you to learn a big backstory or complicated controls, it just says "Hey, you're in space. Click some stuff". So that's what I did.
I've had my eye on the mind-bending exploration game Mirror Moon since I first saw its creators demonstrating it at the Game Developers Conference a couple of years ago. The game is now up for pre-order through their site, and if you do so you can get in on the beta right now.