Line Runner is one of the best runner game in Android!
As you can guess, there is one game hero (stickman) is running constantly. You are supposed to cope with many obstacles (here black boxes). These obstacles may be on ground or air, you should take the right action with the right timing.
Controls are so simple. Tap the left side of the screen to roll under the boxes and tap the right side of the screen to jump over the boxes.
It is not easy as it looks, because you fight against the time, any latency before taking the action will cause colliding the obstacle. But this excitement will make you addicted to the game.