Aim with the mouse. Throw by holding down the left mouse button before releasing when the 'error circle' is at its smallest. Hint: it's better to release the mouse earlier than later.nnWin a 501 leg by beating your opponent to zero! Like real 501 darts, you have to finish on a double - so if you have 32 remaining then you can win by hitting double 16.nnDoubles are scored by hitting the outer ring segments of the numbers. The bull is also a double worth 50 points.nnThe game includes hints that tell you where to aim when getting on doubles.