Glitchy... I hope.
I can NOT be the only one who's experiencing this: when the menu is brought up (focus loss or death), there's a good probability that any click - even on the continue/menu buttons, it brings up the "gimme5games" website. This got very old, VERY fast. I'm using Chrome for this, if that makes a difference.
The other aspects of the game are great, if you can respect them for what they are. But that thing I mentioned put a serious damper on my enjoyment of the game. So I'd advise that get fixed, pronto.
8/10 because that click-thing is sufficiently annoying to warrant it.