501Main Rule Set = American Darter Association.

Setup:

• Teams are made of 2 players. 
• You will play 3-4 games per night, depending on number of teams.. 
• League standings are based on simple wins and losses.
• Teams are allowed to bring substitutes if they have less than 2 players. . 

Game Rules:  

501 

The game starts with a set number of points, 501. The number hit is reduced from the starting points and the game ends when the score becomes exactly 0. When the remaining points go below zero, it’s called a ‘bust’. In case of a bust, your round ends there even if you did not throw your 3 darts. Your next round starts with the score you had before the bust.