It's a good game. The gesture recognition could use a little work (or be eliminated entirely), but aside from that, good. It's not great, though. In order to be great, there'd need to be more. Right now, it's just the same thing, over and over, wave after wave. It's get really old, really fast. 3/5
There's potential, but it doesn't meet expectations (based upon the description). It feels like a loose collection of images with arbitrary "clicks" to move to the next one. There's no story, and, frankly, no game to it. 2/5
For what it's worth: it's not a bad game. It's a different sort of game, not challenging in the least. Maybe it deserves some badges. But if it had badges, they shouldn't be anything greater than Easy, because, as I said, it's not challenging at all.