SIX DARTS AT A REAL BOARD. STOP ONE BAR TO SET THE HEIGHT, A SECOND TO SET THE LINE — THEN LET IT GO. THE TWENTY IS FLANKED BY THE ONE AND THE FIVE, SO GOING FOR THE TREBLE IS A GAMBLE. EACH BAR CHANGES SPEED EVERY TIME IT TURNS, AND YOU GET 3 LENGTHS OF IT BEFORE THE DART IS GONE. THROW AS OFTEN AS YOU LIKE — YOUR BEST SET OF SIX MAKES THE BOARD. MAXIMUM 360.