If you ever doodled on a piece of graph paper in school, this game is for you. Your objective is to bounce an adorable green alien up a series of platforms by tilting your phone from side to side. Shoot enemies on your way up, get a boost from a jet pack or accidentally get sucked into a black hole. The homespun animation is fantastic and the way the score is scribbled in the margins adds a nice nostalgic touch to the game. Leaderboards let you compare your score with Facebook friends and gamers all over the world.
Links: Doodle Jump (iOS), Doodle Jump (Android)
MORE: 14 Important Arcade Games Not Available for iPhone or iPad