I sometimes have to press the round green circle 2 or three times before it starts, I like the shutter closing animation, some basic instructions on how to start the game would definitely be handy. You should place the banner advert over the closed shutter top or bottom, currently if the opt shutter I'd closed the banner as corners the shutter which is good, but if the shutter is closed at the bottom, the banner advert is still at the top which is distracting, well it is for me anyway.
It's a good same, I like it, how are you heckling work spellings as that works perfect?