The game is pretty simple. It would be nice to have more variety of obstacle. This balance thing is making this game very hard. I chose easy difficulty and at first try I almost didn't have to move at all, and I hit around 17k. During the second try, I died at 400. The gun, for some reason, didn't work for me. It would be nice to have some in-game reminder of the shop, because I forgot about when I first played. Music would greatly help improve the game feel.