Super Smash Bros. Ultimate DX

Super Smash Bros. Ultimate DX (Great Fray Smash Brothers Special DX), often shortened to "SSBUDX" or "Ultimate DX" will be a updated re-release of Super Smash Bros. Ultimate, the fifth entry in the Super Smash Bros. series of crossover fighting games. It is planned to release sometime at the end of the 2020's decade on the Nintendo Switch's successor. It plans to feature both the original game and the DLC additions (Piranha Plant and the Fighters Pass 1 and 2 fighters), alongside new items, stages, fighters, and music.

Changes from the Nintendo Switch release

 * Charizard is once again promoted to being a standalone character and has much of his movesets and Final Smash reused. Squritle, Ivysaur, Pyra, and Mythra also now become standalone characters and they both gain new special moves.
 * Trophies and All-Star Mode have been bought back after being left out in the original.
 * All-Star Mode is unlockable for the first time since Super Smash Bros. Brawl and like Classic Mode, players are able to spend Gold or All-Star Ticket to keep the current intensity. The Rest Area music features a light and relax remix of Lifelight. Like with Smash 4, the order in which different characters are fought are based on their personal debut in Japan. They are fought chronologically, much like for 3DS.
 * There are 1,000 trophies in the game, as opposed to the 290 trophies in Melee, 544 trophies in Brawl, 685 trophies in for 3DS, and 743 trophies in for Wii U.
 * Tourney now allows 64 players max. similar to Melee and for Wii U.
 * The Chronicle option has been bought back for the first time since it's inclusion in Brawl and now has a comprehensive list of many titles published by Nintendo and other gaming companies - ranging from the Game & Watch to the Nintendo Switch's successor.
 * Cloud and Sephiroth also now gain their official English voice dubs, making this the first (and possibly only Smash game to date) to do this. Cloud is reprised by Cody Christian (who has voiced him since Final Fantasy VII Remake) while Tyler Hoechlin reprises his role as Sephiroth. The Japanese version still keeps their original Japanese voice actors though.
 * Target Smash, 10-Man Smash, 3-Minute, and 15 Minute have returned after being absent from the Nintendo Switch version.
 * World of Light gains two bonus sub-worlds, the Lighter Realm and the Darker Realm and the original game's DLC can now be unlocked via fighter battles.
 * They can also now be unlocked be competing either Versus, Classic Mode, or All-Star Mode.
 * Several movesets, special moves, taunts, and Final Smashes for the characters have been revamped
 * For example, Chrom no longer acts as Robin's Pair Up due to being part of the playable fighter roster. He is replaced by Stahl, a shepherd from Awakening.
 * Small battlefield forms have been introduced.
 * Music can now be played randomly on any selected stage, not just Battlefield.
 * A second page for the character selection screen has been added that includes exclusively new characters and new purchased DLC, much like with for 3DS.

Fighters
All the fighters from the original Super Smash Bros. Ultimate have returned, including the DLC fighters. Like with the original release, the original eight fighters are available from the start and the rest of the fighters must be unlocked by either competing Versus Mode, Classic Mode, All-Star Mode, or World of Light mode.

64

 * 1) Mario
 * 2) Donkey Kong
 * 3) Link
 * 4) Samus
 * 5) Yoshi
 * 6) Kirby
 * 7) Fox McCloud
 * 8) Pikachu
 * 9) Luigi
 * 10) Ness
 * 11) Captain Falcon
 * 12) Jigglypuff

Melee

 * 1) Peach
 * 2) Bowser
 * 3) Ice Climbers (Popo and Nana)
 * 4) Sheik
 * 5) Zelda
 * 6) Dr. Mario
 * 7) Pichu
 * 8) Falco Lombardi
 * 9) Marth
 * 10) Young Link
 * 11) Ganondorf
 * 12) Mewtwo
 * Roy
 * 1) Mr. Game & Watch

Brawl

 * 1) Meta Knight
 * Pit
 * 1) Zero Suit Samus
 * 2) Wario
 * 3) Snake
 * Ike
 * 1) Squirtle
 * 2) Ivysaur
 * 3) Charizard
 * 4) Diddy Kong
 * 5) Lucas
 * 6) Sonic
 * 7) King Dedede
 * 8) Olimar (Alph)
 * 9) Lucario
 * 10) R.O.B. (Famicom and NES)
 * 11) Toon Link
 * 12) Wolf O’Donnell
 * Charizard becomes a standalone character for the second time in a row. Squirtle, and Ivysaur are now standalone characters and are no longer part of the Pokemon Trainer's team.

For 3DS / Wii U

 * 1) Villager
 * 2) Megaman
 * 3) Wii Fit Trainer
 * 4) Rosalina & Luma
 * 5) Little Mac
 * 6) Greninja
 * 7) Palutena
 * 8) PAC-MAN
 * 9) Lucina
 * 10) Robin
 * 11) Shulk
 * 12) Dark Pit
 * 13) Bowser Jr. (Larry, Iggy, Ludwig, Wendy, Lemmy, Roy and Morton)
 * 14) Duck Hunt Duo
 * Ryu
 * 1) Cloud Strife (VII and Advent)
 * 2) Corrin
 * 3) Bayonetta (1, 2, and 3)

Ultimate (Switch)

 * 1) Inkling
 * 2) Daisy
 * 3) Ridley
 * 4) Simon Belmont
 * 5) Richter Belmont
 * 6) Chrom
 * 7) Dark Samus
 * 8) King K. Rool
 * 9) Isabelle
 * 10) Ken Masters
 * 11) Incineroar
 * 12) Piranha Plant
 * 13) Joker
 * 14) Hero (III, IV, VIII and XI)
 * 15) Banjo & Kazooie
 * 16) Terry Bogard
 * 17) Byleth
 * 18) Min Min
 * 19) Steve (Alex, Zombie and Enderman)
 * 20) Sephiroth
 * 21) Pyra
 * 22) Mythra
 * 23) Kazuya Mishima
 * 24) Sora
 * Pyra and Mythra are now standalone characters and have gained different special moves and Final Smashes.

Ultimate DX.
There will be a total of twenty four new fighters for the game. These characters are not present for the original version of Super Smash Bros. Ultimate. This will take the number of characters from the original release to forty-eight, the most out of any Smash title. DLC is also being planned for the game.
 * 1) Bandana Waddle Dee (Kirby)
 * 2) Spring Man (ARMS)
 * 3) Akira Yuki (Virtua Fighter)
 * 4) Noah (Xenoblade Chronicles)
 * 5) Paper Mario
 * 6) 2B (NieR)
 * 7) Shantae
 * 8) Siegfried (Nightmare) (Soul)

Assist Trophies
All the Assist Trophies (minus Spring Man and Akira Yuki) will be present in this game. Characters who were not present in the original Super Smash Bros. Ultimate are listed in bold.

Stages
There will be 115 stages in the base game (inculding all eleven stages that were DLC in the original Super Smash Bros. Ultimate), thus being 19 stages introduced in the original game and 96 returning stages.

Regular stages

 * 1) Battlefield
 * 2) Small Battlefield
 * 3) Big Battlefield
 * 4) Final Destination

N64

 * 1) Peach's Castle
 * 2) Kongo Jungle
 * 3) Hyrule Castle
 * 4) Super Happy Tree
 * 5) Dream Land
 * 6) Saffron City
 * 7) Mushroom Kingdom

GCN (Melee)

 * 1) Princess Peach's Castle
 * 2) Rainbow Cruise
 * 3) Kongo Falls
 * 4) Jungle Japes
 * 5) Great Bay
 * 6) Temple
 * 7) Brinstar
 * 8) Yoshi's Island
 * 9) Yoshi's Story
 * 10) Fountain of Dreams
 * 11) Green Greens
 * 12) Corneria
 * 13) Venom
 * 14) Pokémon Stadium
 * 15) Onett
 * 16) Mushroom Kingdom II
 * 17) Brinstar Depths
 * 18) Big Blue
 * 19) Fourside

Wii (Brawl)

 * 1) Delfino Plaza
 * 2) Mushroomy Kingdom
 * 3) Figure-8 Circuit
 * 4) WarioWare, Inc.
 * 5) Bridge of Eldin
 * 6) Norfair
 * 7) Frigate Orpheon
 * 8) Yoshi's Island
 * 9) Halberd
 * 10) Lylat Cruise
 * 11) Pokémon Stadium 2
 * 12) Port Town Aero Dive
 * 13) Castle Siege
 * 14) Distant Planet
 * 15) Smashville
 * 16) New Pork City
 * 17) Summit
 * 18) Skyworld
 * 19) Shadow Moses Island
 * 20) Luigi's Mansion
 * 21) Pirate Ship
 * 22) Spear Pillar
 * 75m
 * 1) Mario Bros.
 * 2) Hanenbow
 * 3) Green Hill Zone

4

 * 1) Boxing Ring
 * 2) Gaur Plains
 * 3) Duck Hunt
 * 4) Wily Castle
 * 5) Super Mario Maker
 * 6) Suzaku Castle
 * 7) Midgar
 * 8) Umbra Clock Tower

3DS

 * 1) 3D Land
 * 2) Golden Plains
 * 3) Paper Mario
 * 4) Gerudo Valley
 * 5) Spirit Train
 * GB
 * 1) Unova Pokémon League
 * 2) Prism Tower
 * 3) Mute City SNES
 * 4) Magicant
 * 5) Arena Ferox
 * 6) Reset Bomb Forest
 * 7) Tortimer Island
 * 8) Balloon Fight
 * 9) Living Room
 * 10) Find Mii
 * 11) Tomodachi Life
 * 12) PictoChat 2

Wii U

 * 1) Mushroom Kingdom U
 * 2) Mario Galaxy
 * 3) Mario Circuit
 * 4) Skyloft
 * 5) The Great Cave Offensive
 * 6) Kalos Pokémon League
 * 7) Coliseum
 * 8) Flat Zone X
 * 9) Palutena's Temple
 * 10) Gamer
 * 11) Garden of Hope
 * 12) Town and City
 * 13) Wii Fit Studio
 * 14) Wrecking Crew
 * 15) Pilotwings
 * 16) Wuhu Island
 * 17) Windy Hill Zone
 * 18) Pac-Land

New familar stages
These ten stages were not present in the original Super Smash Bros. Ultimate. This takes the number of stages to 106.
 * 1) N64 Planet Zebes
 * 2) GCN Poké Floats
 * 3) GCN Mute City
 * 4) Wii Rumble Falls
 * 5) 3DS Pac-Maze
 * 6) 3DS Rainbow Road
 * 7) Wii U Jungle Hijinxs
 * 8) Wii U Woolly World
 * 9) Wii U Orbital Gate Assault
 * 10) Wii U Pyrosphere

Ultimate

 * 1) New Donk City Hall
 * 2) Great Plateau Tower
 * 3) Moray Towers
 * 4) Dracula's Castle
 * 5) Mementos
 * 6) Yggdrasil's Altar
 * 7) Spiral Mountain
 * 8) King of Fighters Stadium
 * 9) Garreg Mach Monastery
 * 10) Spring Stadium
 * 11) Minecraft World
 * 12) Northern Cave
 * 13) Cloud Sea of Alrest
 * 14) Mishima Dojo
 * 15) Hollow Bastion

Ultimate DX.
It's unknown how many stages the game will have
 * 1) Tokyo Blur (Mario)
 * 2) A stage based on Xenoblade Chronicles 3

This game has examples of:

 * Adaptation Expansion: A lot of the universes from the original releases' DLC like Persona and Kingdom Hearts have gotten more expanded content, mainly for the music tracks and spirits. They also now have trophies based on their respective universes unlike the Switch version.
 * Adapted Out: For the Super Smash Bros. x Soulcalibur collaboration, the only characters from Bandai-Namco's Soul franchise to appear are: Siegfried (as a downloadable fighter, along with Nightmare as his alternate costume, being a Fighter Spirit), while the following characters appear via spirits: Mitsurugi, Sophitia, Taki, Voldo, Seong Mi-na, Cervantes, Inferno, Hwang, Kilik, Xianghua, Ivy, Yoshimitsu, Maxi, Astaroth, Talim, Raphael, Cassandra, Zasalamel, Tira, Amy, Setsuka, Hilde, Grøh, and Azwel. They even use much of the artwork from Soulcalibur VI.
 * Breaking Old Trends: Unless you count the original Super Smash Bros. that was re-released on the Wii's Virtual Console, this marks the first (and possibly only time in the series) where a Smash game gained a re-release on a new console with additional content not present in the Nintendo Switch version. Melee, Brawl, and for 3DS / Wii U never ever once saw a re-release on a Nintendo console.
 * Promoted to Playable: It's likely that several characters (be it spirits, Assist Trophies, and Mii Costumes) will be upgraded to becoming playable characters for this release. Examples would be Spring Man from ARMS, Bandana Waddle Dee from Kirby, Akira Yuki from Virtua Fighter, etc.
 * Updated Re-release: The update includes even more content that were not present in the Switch release. This includes bringing back All-Star Mode from Melee, Brawl, and for 3DS / Wii U, Chronicle from Brawl, trophies, a few more returning stages like Pac-Maze from for 3DS and Jungle Hijinx from for Wii U. The release also plans to add another twenty four characters that were not present in the original release.

YMMV

 * Author's Saving Throw: A major complaint with the original release was that it got rid of several options that were a staple since Melee like All-Star Mode and the trophies. This version makes up for all of it by adding them back in.
 * All-Star Mode has gone back to being unlockable unlike for 3DS / Wii U and much like Melee and Brawl and plays out similar to Ultimate's Classic Mode.
 * Online mode, which was widely criticized in the original has now gone a major upgrade and performs much better than it did in the Switch release.
 * Broken Base: Was it a good idea to update a game several years after it ended development back in 2021? Most think Ultimate would be better off as a standalone release like previous titles, others don't mind this thanks to the Switch release selling over 29.53 million copies worldwide in 2022 and surpassing Melee, Brawl and Street Fighter II, as the best selling fighting game of all time.

Trivia

 * It's possible this version could do away with Mashahiro Sakurai's involvement, however, Nintendo will still credit him as the supervisor.
 * It's unknown if amiibo support will be added or if it'll do away with it.