I found this game quite fun, but I think that putting a menu in the Pause screen that allows you to upgrade during the game (or even just after levels) would be good. (I think I'm just obsessed with upgrading.) 4/5. Teehee.
I. Love. This. Game. I like how simple it is and also how the keys and door are red (and how the keys turn grey after you get them), so when you zoom out they're still very visible even in the later, larger levels. The music is cool too. Really good game. Even though I suck at it. :D 5/5
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