Abstract: A domino type game consisting of two sets of rectangular playing pieces of substantially the same size and proportions, the first set consisting of a multiplicity of pieces of three different colors individual to the pieces having contiguous substantially square, coplanar opposite end surface areas; number symbols selected from a range of zero through nine disposed on said surface areas including a blank area symbolizing zero and spaced apart spot markings symbolizing selected numbers in said range, said set including pieces on which the number symbols on opposite end areas are different, known as "singles", and pieces on which the number symbols on the opposite end areas are the same, known as "doubles"; the second set consisting of a multiplicity of pieces of five different colors individual to the pieces and distinct from the first set, each piece having a rectangular surface area; and visual indicia on said surface areas of the second set individually symbolizing numbers selected from the range of one thr