Deduction board game are drawn at random. Notable members of this category include "Black Box" and "Master Mind". Investigation games are board games in which the players generally play as police, detectives or other investigators. The best known game of this type is "Cluedo". In fact, many of games in this category utilize a mechanic known as "The Missing Card," which was developed by Anthony E. Pratt for "Cluedo" ("Clue" in the United States). "The Missing Card" takes a known set of cards (or other token) and removes one or more of them. By gathering information and using deduction and logic, the players
Which Witch? (board game) witches: Ghoulish Gertie, Wanda The Wicked and Glenda The Good. Drawing a Ghoulish Gertie card instructs player to drop the whammy ball into the chimney; if any player's token is knocked off the track by the ball, it must be returned to the start square for that room. Drawing the Wanda the Wicked card requires that the player's token be replaced with a mouse; a mouse cannot move from its current tile until the same player draws a Glenda The Good card, which allows the player to reclaim the original child token. A version of the game was released as