Its very difficult at first, but once you get use to it, you can actually get pretty good! Also, my next game is going to be Tank Trouble, an old online multi-player game.
I call it Double Rocket. The player control two rockets, on both sides of the ship, to propel you forward. It is a physics game with gravity, air friction, and rotation. The goal is to run into the small green box as many times as possible without going off screen. Going off screen will reset your score.