Mouse Trap (originally Mouse Trap Game) is a board game first published by Ideal in 1963 for two to four players. It is one of the first mass-produced three-dimensional board games. Players at first cooperate to build a working mouse trap in the style of a Rube Goldberg machine. Then, players turn against each other to trap opponents' mouse-shaped game pieces. Gameplay Original version The basic premise of Mouse Trap has been consistent over time, but the turn-based gameplay has changed. Its concept was first invented by Marvin Glass and his company, Marvin Glass and Associates, who were later granted a US patent in 1967. The original published version of the game in 1963 was then designed by Hank Kramer of Ideal Toy Company, filling in the details Glass had left open, and allows the players almost no decision-making, in keeping with other games for very young children such as Candyland or Chutes and Ladders (Snakes and Ladders). Players take turns rolling a die to advance their mouse piece along a path around the game board, from the start space to a continuous loop at the end. The Rube Goldberg-like mouse trap is assembled in the center of the board, with players adding one or more of its pieces when they land on specified "build" spaces. The trap is always assembled in a specified order, and is attached to the board by inserting tabs into holes and locking them into place. Along the ending loop are additional "build" spaces (in case the trap is still not completed), a "cheese" space positioned directly underneath the trap's cage, and a "turn crank" space. If a player lands on the "turn crank" space when an opponent is on the "cheese" space, the crank can be turned on the machine to launch it; if the machine works properly and the cage falls on the "cheese" space, that opponent is eliminated from the game. The winner is then the last one remaining after all the other players are captured. Revised versions In 1975, the board game surrounding the trap was redesigned by Sid Sackson, adding the cheese pieces and allowing the player to maneuver opponents onto the trap space. Players collect cheese-shaped tokens during the game, and if the trap space is vacant when they land on the "turn crank" space, the tokens can be redeemed for a die roll to move an opponent. A