The game is great. It was a bit too simple for my tastes, but the cats were a sure win for me. The game seems pretty easy and short once I got a hang of it. About the shop exit button not working, I read the text that was underneath it and I'm guessing it was like a tutorial to teach you to buy the equipment? I think your tutorial needs to be more clear otherwise people might mistaken it as a bug of some sort. Overall great game!