To play Putterball, you'll need a Putterball game set, Putterball Game which typically includes a specially designed game board, two putters, six golf balls, and 12 removable cups. The game board resembles a golf green with six holes arranged in a triangular pattern on each side, similar to a beer pong setup. The objective of the game is simple: use the putter to sink golf balls into the opposing team’s cups, just as you would in beer pong, but with a putting twist.