A set of four modules, labeled A1 through A4 published by TSR in 1980 and 1981. The modules were originally designed as a tournament series for Gen Con XIII. In the course of the four modules the players are recruited to put an end to looting of coastal towns, track the problem back to slave trade and make their way into the slavers' realm to put a stop to their actions. As they learn the slavers' secrets they ultimately attack their base of operations. The characters are captured and must make a daring escape without much of their equipment before finally putting an end to the slavers' reign of terror. Each module in the series offers a scoring system so you can recreate the original tournament.