Each player is represented by a small metal or plastic token that is moved around the edge of the board according to the roll of two six-sided dice. The number of tokens (and the tokens themselves) have changed over the history of the game with many appearing in special editions only, and some available with non-game purchases. After prints with wood tokens in 1937, a set of eight tokens was introduced. Two more were added in late 1937, and tokens changed again in 1942. During World War II, the game tokens were switched back to wood. Early localized editions of the standard edition (including some Canadian editions, which used the U.S. board layout) did not include pewter tokens but instead had generic wooden pawns identical to those that "Sorry!" had.