Move your mouse up and down and the plane will follow. Dodge all the obstacles. If you hit them you die, and must restart from level one. There are seven levels. To beat them get the required score. Just to know, the game is almost impossible. That is why there is a variable for times game beat. On level seven the plane will go left and right with your mouse.
Have fun but don't get too frustrated. The game is extremely difficult. I've never beat it, although i haven't tried very many times. Also check out my featured game TARS.