Horrible. I understand that this game is in testing, but it's too deep in testing to be classified as a game. You should put it in that place where games go when there not in some sort of alpha, I cant remember what it's called because I don't make games and I have only recently heard about it. Also, like everyone else said, if you ever want to get somewhere with this "game" add upgrades.
Sorry for being so harsh, but this game is just so bad.