Very fun as well. A little slower than the previous version (because of the increase in needed bounces), im currently at 9 times boost, and the amount is a bit to mutch.
I would recommend this game. Maybe add some way to make progression faster lateron, but in the beginning its all fine and dandy. (at 6 times I had all upgrades already before the options button, so from that point onwards it was just waiting every time, with the waiting becoming longer).
Gl with the full version