Petey's Bomb Battle

Petey's Bomb Battle is a Boss Battle minigame appearing in Mario Party 10. It takes place in Mushroom Park and pits players against Petey Piranha. This was one of the four Mario Party minigames (and the only boss minigame) featured at the E3 2014 demo.

Intro
The players are standing in a small plaza near a pool. Suddenly, Petey drops from the sky, only to slow his descent by flapping his leaves. He lands on a raised dais on the other end of the plaza and roars at the players, who pick up color-coded bombs as the minigame begins.

Gameplay
The players must deplete Petey's health by shooting bombs at him. Every successful hit gives the shooter a point. During the battle, Petey will periodically open his mouth—any shots fired at this point are swallowed harmlessly. After Petey closes his mouth, he spits any swallowed projectiles back to their shooters, making them lose one point per bomb. Petey telegraphs this defense by leaning forward as the players shoot him—at this point, it is best to cease fire and wait for him to close his mouth. After a successful counterattack, Petey may also dance for a moment, leaving him vulnerable to attack.

When Petey loses half of his health, he bites at the atmosphere, roars at the players again, and intensifies the battle. He opens his mouth much more frequently than before, and also tries to fake players out by leaning forward repeatedly before actually opening his mouth. On top of this, any players who shoot bombs into Petey's mouth lose an extra point from a final bomb that Petey spits out after their "reflected" shots.

The final shot is worth a bonus of five points. Petey takes 130 hits before being defeated. The player with the most points wins.

Controls
− Shoot

In-game description
"Throw bombs!"