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 Koopa Troopa, Toad, and either a Boo (in Mario Party 3) or a Goomba (in Mario Party: The Top 100) enter doors. 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. If no one answers correctly, the minigame ends in a draw.

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!"

Trivia

 * In Mario Party 3, if multiple players win, the "one winner" track plays.
 * Along with The Beat Goes On, this is one of the two Mario Party 3 minigames that appear in Mario Party: The Top 100 but do not appear in Mario Party Superstars.