One Deck Dungeon: Forest of Shadows is a stand-alone expansion to 2016's smash hit, One Deck Dungeon. One Deck Dungeon is a tabletop version of the popular video game phenomenon of roguelikes -- dungeon delves where you try and survive as long as you can against increasingly nasty monsters. The game is very easy to learn, featuring intuitive dice mechanics and thematic skills and abilities. With the base game plus the expansion, (or two copies of either), a group can bring a party of four into the dungeon).