Bowser's Sky Scuffle

Bowser's Sky Scuffle (known as Bowser's Ballistic Blowout in the British English version) is the last boss minigame in Mario Party: Island Tour. It is first played and unlocked on the 30th and final floor of Bowser's Tower.

Introduction
Bowser flies in front of the player in his Koopa Clown Car, then proceeds to roar.

Gameplay
In the game, the player must fire up to six cannonballs in first-person view to attack Bowser as he moves around in his Koopa Clown Car. This feat is most easily accomplished when Bowser occasionally stops to laugh maniacally.

After the player runs out of cannonballs, they must proceed to the next platform, and hit up to three flying blocks with cannonballs in them. If his HP is above half, Bowser will simply breath streams of fireballs. If his HP is below half, Bowser will shoot a round of fireballs that rain down similar to volcanic debris, launch a quick stream of fireballs as the other fireballs rain down, and pound the platform with his Koopa Clown Car.

Ending
Bowser's Clown Car will gradually explode, blasting Bowser into the sky with a twinkle. The player then does their Superstar Animation instead of their normal victory pose.

Controls

 * – Move
 * – Jump/Fire
 * – Aim

In-game text

 * Rules – American English " Please pay attention to your surroundings and be careful when moving your system. Dodge Bowser's attacks and hit the Cannonball Blocks to arm your cannon. Them aim for Bowser by moving your system. If the gameplay becomes unstable, place the system on a flat surface to recalibrate. You can also press down on at any time to center your view. 
 * Rules – British English " Please be aware of your surroundings while moving your system and keep a safe distance from other people. Hit the floating blocks to collect cannonballs. Then make your way to the cannon to fire your cannonballs at Bowser. Note: Press down on to recalibrate the gyro sensor. If the in-game movements appear to be stilted, place the system somewhere stable and keep it still for a short time."

Names in other languages
Battaglia contro Bowser