With custom darts setups you can track your practice with different darts setup combinations and see which setup that works best for you. Add your setups on your profile page.
The game has three parts:
Shanghai 10-15 - Three darts on each number
Doubles 1-20+BULL - One dart on each
Shanghai 15-20 - Three darts on each number
If you hit Shanghai (1 single + 1 double + 1 treble) you get a Bonus of 100 points.
On the doubles round you get 50 points for each double and a bonus of 50 points for BULL