Step 1: Choose A Difficulty (Difficulty affects the obstacle speed moving from left to right.) Easy = 2 secs. Medium = 1.5 secs. Hard = 1 secs. Impossible = 0.5 secs. Step 2: Choose Your Character. Use the arrow keys to switch characters during flight. Each character has their own strengths and weaknesses, as well as their own life bar. Step 3: Place your mouse on the slider (you don't need to hold down) and go up and down to control the character. The object of the game is to dodge the obstacles coming from the right by moving up and down. You lose when you get down to 0 with any character.