 Unlike its predecessors, the game is based entirely on the "Dungeons & Dragons" 3rd edition ruleset, which brings such things to the series as feats, the ability for any race to be any class, and the ability for any class to use any weapon.As in "", the 3rd edition character classes of Barbarian, Sorcerer, and Monk are present in the game, but unlike that game there are also many sub-races, such as Drow, and Tieflings, which all have racial advantages and disadvantages.Another significant change is the increased bestiary, which now includes such creatures as bugbears, hook horrors, and driders, as well as many returning monsters from the previous "Icewind Dale" game and its expansion packs, the "Baldur's Gate series", and "".