The dungeon tile, on every card, allows you to randomly generate a dungeon in a role-playing game. Each tile has a doorway at the side nearest the bottom of the card (representing the direction in which the party entered that room). The tile then has a random selection of doorways leading off. Each doorway off may be empty, or may have a door. All combinations of doors and doorways are present in equal distribution.
Half of the dungeon tiles have a crossed swords icon on them. You can use this in your game to represent a room with a monster in, for example, or perhaps a trap.
There is an exclusive game, "Dungeon Crawl," that can be played with these elements. The rules are given in the guide book that accompanies decks of cards. Because it is one of the exclusive games in the guide, its rules aren't included on this site.