Another Mario & Luigi game.
The story has not yet been confirmed.
The gameplay plays out like any other Mario & Luigi game, except the player can choose if he wants to do the chapter as Mario and Luigi or Peach and Daisy. Mario's controls are with the A button, Luigi's with the B, Peach's the X, and Daisy's the Y.
- Peach's Castle (main hub)
- Yoshi Forest
- Gloomy Caverns
- Boo Mansion
- Dry Deserts
- Frosty Palace
- Temple of Fire
- Mayhem Mountains
- Sky-High Peak
- Inside the Volcano
- Bowser's Castle
Able to be fought by both teams
- Stone Goomba
- Goomba Diver
- Koopa Troopa
- Hammer Bro.
- Fire Bro.
- Ice Bro.
- Boomerang Bro.
- Bomb Bro.
- Shy Guy
- Copter Guy
- Bomb Guy
- Thunder Lakitu
- Bomb Lakitu
- Dark Boo
- Golden Boo
- Dry Bones
- Dark Bones
- Red Bones
- Dull Bones
Only can be fought by Mario and Luigi
- Plunger Bro.
- Elite Koopa Troopa
- Mini Bowser
- Shadow Boo
Only can be fought by Peach and Daisy
- Heart Bro.
- Monty Mole
- Dark Birdo
- A * means can only be fought by Mario and Luigi
- A ** means can only be fought by Peach and Daisy
- A *** means all four characters must fight this boss.
|Bowser (1)*||20||The Koopa King himself, Bowser has constantly tried to kidnap Peach as a hostage.||Peach's Castle|
|Wiggler||40||He may be friendly at first, but get him steamed and you're toast!||Yoshi Forest|
|Congorilla||48||He's a cranky monkey who hates all Yoshis! Not only that, he's a barrel throwing brute.||Yoshi Forest|
|These block dudes look just like the two plumber brothers, don't they?||Gloomy Caverns|
|These block gals look just like the two princesses, don't they?||Gloomy Caverns|
|Villon (1)||70||This lunatic has appeared on the stage. And yes, he IS a lunatic.||Gloomy Caverns.|
|Dry Bowser and Kamek||75|
|Dry Bowser: This skeleton looks plenty like the Koopa King, doesn't he?|
Kamek: He's Bowser's advisor who can really whip up a spell!
|King Boo||80||He's the ghostly king of the ghosts who ghostly guards the ghostly mansion. Ghostly!||Boo Mansion|
|Mummipokey||80||He's either an ancient pharoh or a Pokey who just had a really bad accident.||Dry Desert|
|Bowser Jr. (1)|
|50||Bowser's favorite son, possibly because he was named after him.||Dry Desert|
|Tutankoopa||85||An ancient pharoh who has been asleep for thousands of years.||Dry Desert|
|Baron Brr||90||He's a king and a giant floating ball of ice. I wonder how it worked out for him?||Frosty Palace|
|Villon (2)||95||See Villon (1)'s description.||Frosty Palace|