Worlds United: The Seven Seas

Nintendo x Kingdom Hearts: Subspace Kingdom  is a Japanese-American action role-playing video game that is published by Nintendo, Disney Interactive Studios, and Square-Enix and released for the Nintendo Switch and Nintendo 3DS in both the United States and Japan.

Plot
When Subspace Holes start to appear, two heroes go forth to destroy them and save the world.

Worlds/Dimensions

 * Tutorial
 * New Jersey
 * Mushroom Kingdom
 * Hyrule
 * Brinstar
 * Dreamland
 * Corneria
 * Pokemon Stadium
 * Mute City
 * Onett
 * Distant Planet
 * Tortimer Island
 * Inkopolis
 * Gaur Plains
 * Boxing Ring
 * Arena Ferox
 * Skyworld
 * Baker Street
 * Devil's Bayou
 * Crocodile Falls
 * Arendelle
 * Olympus Coliseum
 * San Fransokyo
 * New York City
 * The Big Top
 * Prydain
 * Alice's World/Wonderland
 * Zootopia
 * The Fox's Woodland
 * Beast's Castle
 * Neverland
 * Darkness of The Seven Seas (final level)

Main

 * Itsuki Yamada/Zach Lewis - A laid-back, listless, and carefree boy who may have a few fears, but with Megan by his side, he is able to overcome them.
 * Nozomi Inoue/Megan Walker

Minor

 * Joshama Yamada/John Lewis - Zach's father
 * Miyuki Inoue/Patty Walker - Megan's mother

Nintendo Characters

 * Mario
 * Luigi
 * Princess Peach
 * Princess Daisy
 * Princess Rosalina
 * Yoshi
 * Bowser
 * Bowser Jr.
 * Larry
 * Morton
 * Wendy
 * Iggy
 * Roy
 * Lemmy
 * Ludwig
 * Wario
 * Waluigi
 * Donkey Kong
 * Diddy Kong
 * Link
 * Zelda
 * Samus
 * Kirby
 * Fox
 * Falco
 * Pikachu
 * Jigglypuff
 * Charizard
 * Mewtwo
 * Lucario
 * Greninja
 * Captain Falcon
 * Ness
 * Lucas
 * Olimar
 * Alph
 * Villager
 * Isabelle
 * The Inklings
 * Shulk
 * Little Mac
 * Marth
 * Ike
 * Robin
 * Lucina
 * Corrin
 * Pit
 * Palutena

Disney Characters

 * Mickey Mouse
 * Donald Duck
 * Goofy
 * Minnie Mouse
 * Daisy Duck
 * Pluto
 * Basil The Great Mouse Detective
 * Dr. Dawson
 * Olivia
 * Toby
 * Hiram Flaversham
 * Bernard
 * Bianca
 * Penny
 * Cody
 * Jake
 * Marahute
 * Hercules
 * Megara
 * Phil
 * Pegasus
 * Dumbo
 * Timothy
 * Mrs. Jumbo
 * Taran
 * Princess Eilonwy
 * Gurgi
 * Alice
 * Alice's Sister
 * The White Rabbit
 * Cheshire Cat
 * Mad Hatter
 * March Hare
 * Tod
 * Copper
 * Bolt
 * Rhino
 * Penny
 * Hiro Hamada
 * Baymax
 * Beast
 * Belle
 * Lumiere
 * Mrs. Potts
 * Chip
 * Cogsworth
 * Wardrobe
 * Peter Pan
 * Wendy
 * John
 * Michael
 * Tinkerbell
 * Elsa
 * Anna
 * Kristoff
 * Olaf
 * Judy Hopps
 * Nick Wilde

Kingdom Hearts Characters

 * Sora
 * Riku
 * Kairi

Square-Enix Characters

 * Cloud
 * Aerith
 * Leon
 * Yuffie
 * Tidus
 * Selphie
 * Wakka
 * Cid
 * Tifa
 * Zack
 * Fuu
 * Yuna
 * Rikku
 * Paine
 * Seifer
 * Rai
 * Vivi
 * Auron
 * Lightning
 * Serah Farron
 * Neku
 * Shiki
 * Beat
 * Joshua
 * Rhyme

Soundtrack

 * Cutting Ties by Wish I Was featuring Cameron Walker (opening theme)
 * Go Undercover by Martin Hall (instrumental) (Zach's theme)
 * Our Skies by Cacti (instrumental) (Megan's theme)
 * Safe & Sound by Nitro Fun featuring Danyka Nadeau (ending theme)