Abstract: This disclosure pertains to a modified checker game apparatus utilizing a conventional playing board in combination with two sets of playing pieces, including playing pieces having a cavity portion in the uppermost lateral surface thereof. A piggy-back type add-on playing piece attachment is removably and partially fitted within the cavity, providing thereby increased versatility in the game rules involving the game of checkers. Stacking structure is provided so that the cavity equipped playing pieces may be nested, one above the other, upon the removal of the add-on playing piece attachment from the lowermost playing piece.