I was very excited to try this. And I did laugh at the facial expressions when the cars were hit. However 80 levels into it and still no difficulty advance. 10 seconds of play, to 20 seconds of ads. And probably the most stupid ads they could have on there. Every few letters a challenge would come up that would last 2 minutes and even that required a 20 second ad. I expected ads because it was not a purchased app, but this was ridiculous. I uninstalled.