It only has one rule: Win. The Game Pearl is a great looking complement to the original Game which was designed for heavy oil. Game Pearl is designed to get down the lane easier and make a strong, continuous arcing backend motion. The extra length comes from the pearlized shell which has a lighter loading of the TEC2 particles. Game Pearl has a low Rg core (2.480) and high differential RG (.051) for 5-6 inches of flare. Let the Games Begin!