“Attack Pieces are fragments that form Special Attacks. If you collect all 10 of the Attack Pieces, you'll be able to use that Special Attack.”
Starlow, Mario & Luigi: Bowser's Inside Story

Template:Item-infobox Attack Pieces are special puzzle piece items that were introduced in Mario & Luigi: Bowser's Inside Story and its 3DS remake, Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey and reappear in Mario & Luigi: Dream Team. They are usually found in singular areas throughout the game, and collecting ten of them in one area will grant Mario and Luigi with powerful Special / Bros. Attacks in Mario & Luigi: Bowser's Inside Story, Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey and Mario & Luigi Dream Team (in Real World locations). Luiginary Attacks are also granted by collecting all 10 Attack Pieces in the Dream World locations from Mario & Luigi: Dream Team.

Most Attack Pieces can be found in and collected by striking blocks that resemble them, though others can be obtained by different methods (usually from NPCs after completing certain objectives). At times, Mario and Luigi can get either one or multiple Attack Pieces at once.

History

Mario & Luigi: Bowser's Inside Story / Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey

Mario obtaining an Attack Piece in Mario & Luigi: Bowser's Inside Story and Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey.

Attack Pieces make their debut in Mario & Luigi: Bowser's Inside Story, where they grant Mario and Luigi with a Special/Bros. Attack once all ten are collected in a single area. They are first found in the Trash Pit inside Bowser's body, and are later found in areas both inside and outside Bowser's body (such as Pump Works and Toad Town). The locations of the Attack Pieces remain the same in Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey.

Special/Bros. Attack SP BP Attack Piece Collection Location
  
Green Shell
3 4 Found throughout the area; mandatory to progress. Trash Pit
  
Fire Flower
4 6 Found throughout the area. Pump Works
  
Jump Helmet
6 10 Found throughout the area. Flab Zone
  
Yoo Who Cannon
7 14 Given by the Koopa Paratroopa Trio after being taught the Blue Shell technique. Toad Town
  
Super Bouncer
7 12 Found throughout the area. Energy Hold
  
Spin Pipe
10 16 Given by solving Kuzzle's first puzzle. Plack Beach
  
Mighty Meteor
8 20 Given by Dr. Toadley's intern when the three Star Cures are used to open Peach's Castle. Toadley Clinic
  
Snack Basket
14 18 Found throughout the area; mandatory to progress. Dimble Wood
  
Magic Window
18 26 Given by defeating the Shroobs. Bowser Castle
  
Falling Star
20 28 Seven given by the Blue Paratroopa Trio, followed by three found throughout the area. Peach's Castle

Mario & Luigi: Dream Team

 
Mario obtaining an Attack Piece in Mario & Luigi: Dream Team.

Attack Pieces make a return in Mario & Luigi: Dream Team, but this time, they grant different types of special attacks. In the Real World, Attack Pieces grant a Bros. Attack to one of the brothers once all ten are collected. In the Dream World, they instead grant a Luiginary Attack to Mario. The brothers obtain their very first Attack Piece in the Real Word in Mushrise Park, given by a Toad after saving him from Thorbs, and in the Dream World in Dreamy Mushrise Park.

Bros. Attacks
Bros. Attack BP Attack Piece Collection Location
 
3D Red Shell
4 Two are given by a Toad, and the rest are found throughout the area; mandatory to progress. Mushrise Park
 
3D Green Shell
4 Given by Brickle. Mushrise Park
 
Fire Flower
5 Found throughout the area. Dozing Sands
 
Bye-Bye Cannon
7 Found throughout the area. Wakeport
 
Dropchopper
7 Found throughout the area. Mount Pajamaja
 
Bomb Derby
9 Found throughout the area. Driftwood Shore
 
Slingsniper
9 Given by Big Massif and Lil' Massif for solving the Ball Hop puzzle on Mount Pajamaja. Mount Pajamaja
 
Jet-Board Bash
12 Found throughout the area. Somnom Woods
 
Zee Egg
15 Given by Eldream for rescuing every Pi'illo and talking to him in Mushrise Park's Maintenance Hut. Mushrise Park
 
Star Rocket
12 Found throughout the area. Neo Bowser Castle
Luiginary Attacks
Luiginary Attack BP Attack Piece Collection Location
 
Luiginary Ball
6 Eight are found throughout the area, and two are given by Dreamy Brickle. Dreamy Mushrise Park
 
Luiginary Stack
10 Found throughout the area. Dreamy Dozing Sands
 
Luiginary Hammer
10 Dreamy Mount Pajamaja
 
Luiginary Flame
14 Dreamy Driftwood Shore
 
Luiginary Wall
14 Dreamy Wakeport
 
Luiginary Typhoon
16 Dreamy Somnom Woods

Gallery