This expansion from the Catan Geographies line requires some material and rules from the Seafarers expansion, celebrating 20 years of Catan Seafarers. Half the price goes to the charity childaid Network. The package includes a game plan, a sheet of punch-out cardboard for the fish, the fish conversion rules cards and the victory point markers for the number of fish ground areas occupied (in six colors), a zip-bag for the parts, a two-sided rules sheet (also available as pdf) and an envelope detailing the named locations on the map. Each player starts with three settlements with one road or ship each, on at least two islands, and sets out to settle the islands to be the first to gather victory points - 15 in a 3-player game, 13 in a 4-player game, 11 in a 5-player game and 10 in a 6-player game. (The latter two cases require the 5-6 player extensions of both basic Catan and Seafarers.)