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
Ploy (board game) the 3M bookshelf game series. The game is said to have a "chess-like feel". The game set includes a board and fifty pieces of various colors and shapes. The game is marketed as a "space-age strategy game". It is also considered to be one of the “better” chess variations. The game is long out of production. The following game mechanics are identical for all variations of play. The game board is square with nine spaces on a side. Vertical, horizontal, and diagonal lines connect the spaces. Players move their pieces along the lines. Each piece has a set number of