This is the most fun game I think I've ever gotten for my grandson. He plays it non-stop. We have to set limits or he'd play it continuously. It's great fun for him and he loves the challenge of getting to new levels and having the ability to "purchase" new vehicles with the coins he earns during the races. He told me the other day, "I think I'll delete all my other games and just keep this one." haha.
My 10 year old daughter downloaded this game for her Kindle Fire tablet. She says that she LOVES!! this game. You have to win the level to get money for new tires and trucks. If you lose, you don't get anything. There are no levels, it is the same level every time. She says that she doesn't win every time but she loves to keep trying.