To be honest, it is one of the most interesting games I've played! It is absolutely out of the ordinary and I love it! I liked the slow increase in wave cleaning difficulty mostly that last one.. was tough buddy I got so close and when I finally hit help it changed the note on the first wave and finished, I saw how miserable I was. Either way a really fun entry, although a little bit uneasy on the ears at some point. But that was the game so no complaints on that. What comes after and the ending is just such a nice and neat way of showing how a well-designed simple thing can be so complex. And so useful at the same time. Amazing work!