This app is a challenging game to play. It's super fun with the games challenges. One warning though it's very additive, just so you know! There are different levels on Bike Baron. You have to try to get all the coins and dodge the T.N.T. Plus it's action packed. The level called 'don't stop' is a very challenging track because it's an ice track. I rate bike Baron 3 out of 5 because I find the game fun and challenging but sometimes when you go over the check point it doesn't activate.