It's a good game, but the scale is too rough to be a great game. At first you're doing nothing with your hits and you only get to upgrade something every 10-15 attempts, and then after a lot of grinding through those early stages you suddenly start going crazy. I literally had it happen where at a certain point I went from my high score being 80K straight to 5.8M
Again, I liked it. But it wasn't great.