Very cool game but uh, weird thing. The page advertises a Steam key with a purchase, and when you go to buy it, it claims to come with one, but clicking on the "claim Steam key" button just throws up a "there are no keys available at this time" notice. Is that how that works? I've never seen this before.
I'm not hugely banged up about it because this game is cool and I can just run things fine locally by downloading the game, but this seems like it's probably not supposed to happen so I figured I'd flag that it does.