Bash 'n' Cash

Bash 'n' Cash is a 1 vs. 3 mini-game in Mario Party. It is usually played when with Bowser. The solo player in the Bowser Suit must evade the other three players and avoid their Hammer strikes for 30 seconds. If all of the player's coins are stolen from the solo player, the game will end. Each hit will rob the solo player of a Coin Bag. The solo player can then attempt to reclaim the Coin Bag before another player gets it. The opening scene shows the gate being locked and the three other players surround the player in the Bowser Suit.

The solo player can avoid being bashed by Hammers by jumping on the other players. The other players can overcome this by spreading out throughout the stage. Any coins lost by the solo player will be subtracted in the final coin count. Either way, the solo player is at a disadvantage. The mini-game takes place inside a small tower with the exit locked.

Other things
The rules say, possibly as a joke, that the single player does not even want to hear the words Bash N' Cash.