From the Fantasy Flight Games Website:'With the elves in decline, the forests of Terrinoth grow more dangerous with every passing year. The trees grow closer, the creatures deadlier, and the air darker ...The Dark Forest expansion pack introduces an assortment of dangerous new monsters, encounters, and events that can be added seamlessly to the Runebound Second Edition basic game. There are no new rules to learn the players can simply shuffle these new cards into their adventure decks and begin playing with them immediately.This expansion includes 30 new adventure cards.'Belongs to the Runebound Series.Expands: Runebound Second Edition - BoardGameGeek