Treasure Dome!

Treasure Dome! is a single-player Bowser minigame found in Mario Party 7.

Gameplay
The player attempts to get the key to the correct chest within the time limit. If the player gets the key in the wrong chest, he or she should move on to the next one and try again. But if the player gets the right chest, they have to grab a new key and to keep going. If there's time left, then the player should go back to the ones that are locked. If all of the chests are open before the thirty seconds are up, the player grabs a gold key, which unlocks the door, and they win.

Trivia

 * The minigame bears a resemblance to Coffin Congestion, but there are no items.