I guess this isn't the full game, but so far it's decent. I can't figure out how to exit planets, look around, or place anything but blocks, but I guess this is a prototype. (Edit: Okay I found this is just a prototype)
Kinda confused at what i'm supposed to do. Also you can run off of the screen, graphics aren't the best and the game needs sound, but I can see how this could be great!