In Doodle Jump, the aim is to guide a four-legged creature called "The Doodler" up a never-ending series of platforms without falling. The left side of the playing field is connected with the right side. For devices with an accelerometer, players tilt the device from side to side to move the Doodler in the desired direction. Players can get a short boost from various objects, such as propeller hats, jetpacks, rockets, springs, trampolines and invulnerability shields. (wikipedia.org).