Abstract: Disclosed is an adaptor for a tossing game configured to be disposed on a supporting structure. The adaptor includes an impact surface toward which projectiles may be thrown, the impact surface comprising a plurality of raised portions having sloped surfaces on one or more sides of a respective peak thereof. A target aperture is configured to extend through the adaptor. A lip extends over an uppermost surface of the supporting structure, the lip being located at a first portion of the adaptor, the first portion being elevated over a second portion of the adaptor that is in proximity to the supporting structure. One or more fasteners secures the adaptor to a generally flat surface of the supporting structure.