Abstract: An amusement device comprises two ball members. One or both have a hard surface coated with a material that explodes when it impacts with another ball at the site of the impact. The coatings comprises by weight to the weight of the coating before application to the ball members 62%-65% of potassium chlorate as an oxidant, 12%-15% amorphous sulphur as a combustible, 10% and 14% each by weight of casein glue as and inhibitor adhesive and arabic gum as and adhesive inhibitor. The coating also includes approximately 1% by weight of a sodium or calcium carbonate compound to act as a neutralizer. The ball members are made of a non-vitrified porcelain, about 1 inch in diameter and have a maximum porosity of 3%.