Barrel Baron

Barrel Baron is a mini-game in the Extra Room of Mario Party 4.

In this mini-game, the chosen player is in a hot desert with oil teeming under the grounds. Walking around with pick-axe in hand, the player must search for a spot that makes the controller rumble (or have a ! appear over the character's head if Rumble is turned off) After chiseling three times, a geyser of oil will come out. Small geysers are worth one point, medium ones are worth ten, and large ones are worth 100. The goal is to get as much oil as possible in 60 seconds.

Controls
Control Stick – Move A button – Dig