To rotate the triangle and change color your simply use your left click mouse button. If you attempt to cross the line using the wrong color you will have to start from the beginning! The game starts off quite easy and the colored lines drop slowly, but as you progress the puzzles become harder and the bars drop more often and closer together. You must have quick reactions and think several steps ahead to keep up! What high score will you register? Will you master the art of Trigon?