The game uses a simple, one-touch system to control the jetpack; when the player presses anywhere on the touchscreen, the jetpack fires and Barry rises. When the player lets go, the jetpack turns off, and Barry falls. As he is continually in motion, the player does not control his speed, simply his movement along the vertical axis. The objective of the game is to travel as far as possible, collect coins, and avoid hazards such as zappers, missiles and high-intensity laser beams. (wikipedia.or