i was pleasantly surprised!
this was actually a pretty damn good idea for a game. although it's not quite a game yet. i mean, what's the point? there's really no challenge, no progression, no real reason to continue.
i think you should make another like this, but add a timer maybe? some kind a points system? a storyline somehow. like you're this monster or something (king kong?), and you must terrorize a city (click buildings to destroy them) in search of some lady hiding inside. just an idea, but i think you see where i'm going with that.
nice concept with the click and un-hiding the object though. very nice.