X is a board game which received the Speil des Jahres (“Game of the Year”) award in 1983. The game is published by Milton Bradely in the United States and Ravensburger in Germany and Canada. It is an asymmetric board game in which a team of players work together to track down a hidden criminal. The game is won when a player lands on the same square as the criminal or the players are unable to make any move. What is X?