A large white door located in the center of the board has five 'dates' waiting inside. Depending on how the doorknob is rotated, a different guy will 'appear' when the door is opened.
Players try to collect a set of four cards. Each set of four cards corresponds to one of the 'dates' hidden behind the door (apart from the infamous 'dud').
Gameplay is determined by the instructions on the square a particular player lands on. Cards may be taken from the draw or discard pile, or from other players. When a player holds a correct set of four cards and lands on an 'open door' square the door is opened, revealing the date.
If the cards do not correspond to the date, the player's turn ends but their set of cards are retained. If the 'dud' date is revealed, all cards held by the player are lost and replaced with a fresh set from the draw pile.
If the correct date appears when the door is opened the game is over and the player opening the door wins the game.
This game was first released in a white box in 1965 and had a 'groovy' upgrade in the early seventies with new artwork.