It is a really good app for when you are bored. It does not need wifi, so long car rides can get a lot funner(: You are a cute little doodle jumper and you jump on platforms and collect many powerups to get higher. You tilt to move side to side. There are monsters blocking your way, and you will die if you hit them. There are many backgrounds to choose from- a bunny scene, soccer scene (the monsters are from different countries!!), underwater scene, halloween, space, etc. Recently, they added a new ninja scene where you collect coins to buy powerups.