Canabalt HD is probably one of those really simple yet addictive games out there in the Play Store currently. It is basically a parkour game and nothing else. The aim of the game- to run for your life. It is a simple and fast-pased platform action game that requires you to jump over obstacles whilst running for your life on rooftops of buildings, cranes and billboards. You get one life and one life only. Use it wisely and don't die!
I bought the game in the 'Humble Bundle' pack a while pack and I think this is one addictive game when you have some free time between classes or waiting for the bus to arrive. It is simple to play and easy to pick up. It one of those games that will make you come back again and again just to try to beat your high score.