In a cooperative board game, players work together in order to achieve a goal, either winning or losing as a group. As the name suggests, cooperative games stress cooperation over competition. Participants typically play against the game, and sometimes against one or two other players as well, who take the role of traitors. In many contemporary cooperative games, cards are drawn each turn from a deck of random events. These provide the conflict or challenge in the game, and make it progressively more difficult for the players.