The overall gameplay and physics are pretty solid. The controls being simplistic are a fun change of pace in contrast to other games. The ads are done the smart way without any forced ones. Drawbacks would be, no Game Center or global leaderboards so after unlocking all the cars it’s basically just trying to beat your own score and that gets old quick. I mean I would buy all the vehicles they want $ for but I don’t see the point without the leaderboards or something else to keep u engaged. I guess the ??? Cars are secret ones u can unlock on certain courses but it would be nice if u at least had a clue how to do it. I don’t mind a challenge or auto accel but cars like the last one and a couple others that have both high top speed and accel are practically useless. Bottom line is it’s worth playing and watching a few ads here and there but realistically I can’t see spending anything unless a couple things are eventually changed or added.