Great idea, and really cool execution. Couple of issues I had, the browser version is pretty much unplayable, at least on a laptop, as the size of the iframe is way larger than the screen. It also basically freezes the browser. The windows version worked fine, but there were some small ui bugs, text getting cut off screen, not enough space for text in buttons etc. The game itself ran very nicely though, but was incredibly difficult! Might have been nicer to have a slower ramping difficulty curve. Great job.