Three Door Monty

Three Door Monty is a Battle minigame found in Mario Party 3 and a Free-for-All minigame in Mario Party: The Top 100. Its name is a pun on the name of the con game and on the  involving three doors. The minigame takes place outside a castle with a moat, three doors, and four fences.

Gameplay
In the introduction, the players have to watch a Boo (a Goomba in Mario Party: The Top 100), a Koopa Troopa, and Toad enter a door. The objective is for the players to answer the question of which character entered which door. The first player to answer the question correctly wins.

Mario Party 3

 *  / /  – Select door

Mario Party: The Top 100

 * //: Select gate

Mario Party 3

 * Game Rules – "Toad, Boo and Koopa will enter the castle. Remember which door each one enters, then be the quickest to answer!"
 * Advice – "If you choose the wrong door, you're out. Hurry, but don't panic!"

Mario Party: The Top 100

 * Description – "Press the button of the gate where the character hid! The first to answer wins!"
 * On-screen – "Remember which gate the shown character ended up at and answer quickly!"