Diddy's Banana Blast

Diddy's Banana Blast is a Boss minigame in Mario Party 9. Unlike other Boss Minigames, this and DK's Banana Bonus are more of bonus minigames rather than boss minigames, but are still categorized as such. Additionally, the players only play this boss minigame and DK's Banana Bonus every time he or she plays on DK's Jungle Ruins, instead of picking between three other boss minigames. The same happens on Bowser Station.

Introduction
Diddy begins cheering from on top of a temple. The players then launch themselves from their current cannons, and the bananas fly in.

Gameplay
The goal of the minigame is to collect as many bananas as possible before the time or bananas themselves run out. Players collect bananas by launching themselves at them using the Barrel Cannons surrounding the stage. Players who ram into each other are temporarily dazed and sent falling into one of the Barrel Cannons on the bottom of the area.

In-game text

 * Rules – "Wait for the right angle, and launch out of the swaying Barrel Cannons to grab as many bananas as you can!"
 * Controls – "Hold the Wii Remote sideways. Press to launch yourself out of the Barrel Cannon."