Rule 1:

Beer Pong is played with 6 cups of beer.

Each player is responsible for 3 cups.

Rule 2:

The balls used must be ping-pongs.

No other type of ball may be used.

Rule 3:

The player who misses a shot must do a shot of beer.

No more than 3 shots of beer may be consumed per game.

Rule 4:

The game ends when one player reaches 21 points.

Points are awarded when a player makes a successful shot.

Want more rules? Check out:

Beer Pong Variations
Beer Pong Records