Did you play Flappy Bird? I tried it and could not do it at all. Erik Tysdal Egaas has come up with something more intelligent, but still very hard, with Hover Box. The object is to get your man from the red rectangle to the green one.
Use your left thumb as an anti gravity force. Use your right thumb to steer left/right. And try not to crash into an obstacle.
There are 30 levels and I enjoyed levels 1 & 2. After that, I could not solve any of them.