Mecha Choice

Mecha Choice is a Free-for-All minigame featured in Mario Party 9. The name is a pun on "meta choice".

Introduction
Players run frantically out of a narrow passage into a larger hall with three doors.

Gameplay
Players are being chased by Mecha Koopas, and must choose doors they think do not lead to dead ends. They use the a button, 1 button, or 2 button to pick a door, and can change their minds as many times during the time limit as they want. For each set of three doors, one is a dead end, and any players who choose that door are eliminated. The last player remaining is the winner. Ties will occur only if all remaining players are eliminated at the same dead end.

Ending
The player enters the hall alone and strikes a victory pose.