Unhappy Trails
From the Super Mario Wiki
Unhappy Trails is a basic mini-game in Mario Party 7, and this is a 8-player mini-game. The goal of this game is to be with a partner to help the player get a treasure at the end of the course by bringing a key to their partner, then they'll run to the treasure and receive the treasure. Once they get that, they must bring it back to the player and they should go back to the beginning of the path to win.
[edit] Trivia
This is the only game in the Mario Party series whose name begins with "U".
