A convertible tiered game system comprising a plurality of tiered platforms, each tiered platform having at least one of a width and a length that is greater than any higher tiered platform, a plurality of tiered overlays configured to be seated upon each tiered platform among the plurality of tiered platforms, at least three of the tiered overlays comprising a center opening and having at least one of a width and a length that is greater than any higher tiered overlay, and a plurality of beverage container placement markers located on at least one of a tiered platform and a tiered overlay. The system may further comprise a lowest tiered overlay configured to rest on a same surface as the lowest tiered platform. The tiered overlays may comprise a lip extending downward along a vertical side wall of a tiered platform on which the tiered overlay is seated.