Mystery Land

Mystery Land is a board set in some ancient ruins in Mario Land in Mario Party 2. It is divided into four areas, to which people warp to each time they land on a Happening Space. They can also pay 10 coins to have a Bob-omb UFO take them to another area. Other interesting features on this board include the Shy Guy's Curse House, where a player can pay 5 coins to curse themself or another player to reduce the number on their dice block to 1-3, rather like the Poison Mushrooms from later Mario Party games. The Item Mini-game is Mallet-Go-Round, and the Duel mini-game is Psychic Safari.

At the end of the game, a red Koopa Troopa comes and alerts the players that the treasure has been found. A cutscene then shows a green Koopa with a golden Bob-omb statue. Then the villain of the board, the Bowser Sphinx, comes to challenge the Koopa to guess a figure shrouded in shadow. The Koopa guesses incorrectly, saying that it's a cow, and Bowser says that's wrong. He puts the Koopa into a rock. Then, the winner of the game comes to confront him. The winner guesses Bowser's shadow riddle correctly, saying that the figure is him. The Bowser Sphinx disappears, a consequence of having his riddle guessed, and the statue breaks to reveal an alien that was trapped inside. The other aliens come to take their rescued comrade away on their spaceship. The winner of the board is then congratulated by the other players, Toad, Koopa, and a Star.

Strangely, after the Bowser Sphinx is defeated, the Koopa's curse does not lift.