The graphics are very nice and minimalist! The gameplay is fun, but it seems to be freezing up on me every now and then. Like everything will freeze, but when I click I can still see the green line, but nothing happens and I have to refresh. Nice game, though!
Sounds like a bug! Almost everything freezes when a Slider moves in and the Shop is one. Did you ever get to see it (has a plus/minus button) ? Anyway, if the background freezes it's the likely culprit. I'll look into it.