The card game Auction Bridge & International Bridge (IB), the third step in the evolution of the general game of bridge, was developed from straight bridge (i.e. bridge whist). The precursor to contract bridge, its predecessors were whist and bridge whist.

Auction Bridge & IB Card Game's trick scoring, bonus scoring, and penalty scoring are radically different from contract bridge, and there is no concept of vulnerability in Auction Bridge & IB.