Mario & Sonic at the Olympic Games: Melee

Mario & Sonic at the Olympic Games: Melee is an installment in the Mario & Sonic series. It was developed by both Nintendo and Sega, and was published by Sega. It is exclusively for the Nintendo Switch.

Playable Characters
In total, there are 48 playable characters, including DLC characters. Guest characters do return for this installment.

Rookies

 * Austin
 * Alex S.
 * Logan
 * Aaron
 * Caleb R.
 * Saben
 * Brennan
 * Jake H.
 * Zach
 * Mikayla
 * Katie
 * Olivia C.
 * Ellie
 * Cassidy
 * Sunshine
 * Naomi

DLC Characters

 * Ryan K.
 * Dani
 * Tori

Referees

 * Toad
 * Toadsworth
 * Lakitu
 * Lakithunder
 * Cream
 * Charmy
 * Orbot
 * Cubot
 * Corden
 * Isabel

Rivals

 * Boo
 * Zik
 * King Boo
 * Kamek
 * The Broodals (Topper, Harriet, Rango, and Spewart)
 * King K. Rool
 * Metal Mario
 * Shadow Mario
 * Meowser
 * Giga Bowser
 * Bullet Bill
 * Banzai Bill(NEW)
 * Gamma
 * Omega
 * Wave
 * Storm
 * Zazz
 * Chaos
 * Death Egg Robot

Crowd

 * Goomba
 * Koopa Troopa
 * Shy Guy
 * Toad
 * Chao
 * Hero Chao
 * Dark Chao
 * Omochao
 * Flicky
 * Porker
 * Tux
 * Chirp

Other

 * Pianta
 * Noki
 * Waddle Wing
 * Goombrat
 * Baby Yoshi
 * Egg Pawn
 * Egg Flapper
 * Yacker
 * Wisps
 * Froggy

Events
There are a total of 30 events in the game. There are 22 Olympic events and 8 Dream events.
 * Alpine Skiing Downhill
 * Alpine Skiing Super-G (NEW)
 * Ski Jumping Large Hill (Individual or Team)
 * Freestyle Skiing Moguls
 * Freestyle Skiing Big Air (NEW)
 * Freestyle Skiing Aerial (NEW)
 * Freestyle Skiing Ski Cross
 * Snowboard Parallel Giant Slalom
 * Snowboard Slopestyle
 * Snowboard Half-pipe
 * Snowboard Cross
 * Speed Skating 500m
 * Short Track Speed Skating 1000m
 * Figure Skating - Singles
 * Figure Skating - Pairs
 * Ice Hockey
 * Curling
 * 4-man Bobsleigh
 * Skeleton
 * Luge
 * Monobob (NEW)
 * Biathlon
 * Dream Skiing
 * Dream Snowboarding
 * Dream Ice Hockey
 * Dream Snowball Fight
 * Dream Curling

DLC Events

 * Dream Skating
 * Dream Biathlon
 * Dream Figure Skating

Mario Series

 * Coconut Mall from Mario Kart Wii (Dream Skiing)
 * Acorn Plains from New Super Mario Bros. U (Dream Ice Hockey, Mario Rink)
 * Snow Kingdom from Mario Odyssey (Dream Snowball Fight)

DLC Locations

 * Sherbet Land from Mario Kart: Double Dash!! (Dream Skating)

Sonic Series

 * Sky Rail from Sonic Adventure 2 (Dream Snowboarding)
 * Planet Wisp from Sonic Colors (Dream Ice Hockey, Sonic Rink)
 * Cool Edge from Sonic Unleashed (Dream Curling)

DLC Locations

 * Mirage Saloon from Sonic Mania (Dream Biathlon)

Songs
These are the songs you can choose from in the Figure Skating and Dream Figure Skating events.

Figure Skating

 * Arrival of the Birds
 * Dreams and Visions by Tony Anderson
 * Indestructible by Twelve Titans Music (Composer David Edwards)
 * Eternity by Franck Barré
 * New Moon (the meadow) by Alexandre Desplat
 * Winterspell by Two Steps From Hell
 * The Starship Sails from Super Mario Galaxy 2
 * Sky Sanctuary from Sonic and Knuckles

Mario Show

 * Main Theme from Super Mario Bros.
 * Castle Theme from New Super Mario Bros. Wii
 * King Bowser from Super Mario Bros. 3
 * Staff Credits from Super Mario 3D Land

Sonic Show

 * Windy Hill from Sonic Lost World
 * Theme of Eggman from Sonic Adventure
 * Final Boss from Sonic the Hedgehog 3
 * Reach for the Stars from Sonic Colors

Story Mode
In story mode, you rescue the Rookies from the clutches of Bowser, Dr. Eggman, and other bad guys.

Costumes
Costumes are unlocked via Amiibo, through in-game challenges, through story mode, or purchased in the shop.
 * Mario
 * Fire Mario
 * Ice Mario
 * Bee Mario
 * Propeller Mario
 * Penguin Mario
 * Cat Mario
 * Wedding Mario
 * Builder Mario
 * Dr. Mario
 * Gold Mario
 * Pirate Mario
 * Explorer Mario
 * Caveman Mario
 * Metal Mario
 * Resort Mario
 * Samurai Mario
 * King Mario
 * Cowboy Mario
 * Luigi
 * Fire Luigi
 * Ice Luigi
 * Fox Luigi
 * Bee Luigi
 * Propeller Luigi
 * Penguin Luigi
 * Wedding Luigi
 * Builder Luigi
 * Dr.Luigi
 * Silver Luigi
 * Pirate Luigi
 * Explorer Luigi
 * Caveman Luigi
 * Metal Luigi
 * Resort Luigi
 * Samurai Luigi
 * King Luigi
 * Cowboy Luigi
 * Peach
 * Peach (Summer Outfit)
 * Daisy
 * Daisy (Summer Outfit)
 * Bowser
 * Meowser
 * Tail Bowser
 * Wario
 * Wario (Biker)
 * Waluigi
 * Yoshi
 * Donkey Kong
 * Super Kong
 * Bowser Jr.
 * Larry
 * Roy
 * Lemmy
 * Wendy
 * Iggy
 * Morton
 * Ludwig
 * Diddy Kong
 * Rosalina
 * Toadette
 * Toad
 * Captain Toad
 * Toadsworth
 * Dry Bowser
 * Dry Bones
 * Koopa Troopa
 * Lakitu
 * Pauline
 * Pianta
 * Shy Guy
 * Professor E. Gadd
 * Birdo
 * King Boo
 * King K. Rool
 * Funky Kong
 * Sonic
 * Classic Sonic
 * Excalibur Sonic
 * Darkspine Sonic
 * Werehog
 * Super Sonic
 * Tails
 * Tails Doll
 * Knuckles
 * Metal Knuckles
 * Super Knuckles
 * Amy
 * Amy (Summer Outfit)
 * Dr. Eggman
 * Classic Eggman
 * Shadow
 * Super Shadow
 * Silver
 * Super Silver
 * Metal Sonic
 * Metal Sonic (Sonic Heroes)
 * Blaze
 * Blaze (Summer Outfit)
 * Burning Blaze
 * Vector
 * Espio
 * Rouge
 * Jet
 * Eggman Nega
 * Zavok
 * Zazz
 * Wave
 * Storm
 * Sticks
 * Cream
 * Chao
 * Egg Pawn
 * Chip
 * Yacker
 * Dodonpa
 * Omochao
 * Big
 * Tikal
 * Ermel
 * Chaos
 * Marine
 * Zomom
 * Zeena
 * Zor
 * Master Zik
 * Infinite
 * Mighty
 * Ray

DLC Costumes

 * Tanooki Mario
 * Stone Mario
 * Boo
 * Paratroopa
 * Dixie Kong
 * Yarn Yoshi
 * Metal Mario
 * Pink Gold Peach
 * Noki
 * Fly Guy
 * Classic Tails
 * Classic Knuckles
 * Egg Flapper
 * Elise
 * Merlina
 * King Arthur
 * Dark Chao
 * Hero Chao
 * Ezran Djor
 * Mephiles
 * Spinner
 * Dave
 * Bean the Dynamite
 * Bark the Polar Bear
 * Fang the Sniper

Music
There are a total of 72 unlockable songs in the game, including DLC songs. There are songs that can be unlocked by completing in-game challenges, through story mode, via Amiibo, purchased in the shop, or available through DLC content.

Mario Series

 * Main Theme from Super Mario Bros.
 * Athletic Theme from Super Mario Bros. 3
 * Main Theme from Super Mario World
 * Main Theme from Super Mario 64
 * Athletic Theme from New Super Mario Bros.
 * Gusty Garden Galaxy from Super Mario Galaxy
 * Underwater Theme from Super Mario Bros.
 * Coincentration from Super Mario 64 DS
 * Mario Circuit from Mario Kart: Double Dash!!
 * Main Theme from New Super Mario Bros. Wii
 * Underwater Theme from New Super Mario Bros.
 * Main Theme from Super Mario Bros. 3
 * Ending Theme from Super Mario World
 * Cheep Cheep Beach from Mario Kart DS
 * Mario Circuit from Mario Kart Wii
 * Jump Up, Super Star! from Super Mario Odyssey
 * Freezy Flake Galaxy from Super Mario Galaxy 2
 * Purple Coin Music from Super Mario Galaxy 1 & 2

Amiibo Songs

 * Super Bell Hill from Super Mario 3D World (any Mario Amiibo)
 * Luigi's Mansion from Mario Kart DS (any Luigi Amiibo, Boo) (NEW)
 * Peach's Castle from Super Mario 64 (any Peach Amiibo)
 * Daisy Circuit from Mario Kart Wii (any Daisy Amiibo)
 * Bowser Road from Super Mario 64 (any Bowser Amiibo, Dry Bowser)
 * Wario's Gold Mine from Mario Kart Wii (any Wario Amiibo)
 * Waluigi Pinball from Mario Kart DS (Waluigi) (NEW)
 * Rail Lift from Yoshi's Story (any Yoshi Amiibo)
 * DK Island Swing from Donkey Kong Country (any Donkey Kong Amiibo)
 * Boss Theme from New Super Mario Bros. Wii (any Bowser Jr. Amiibo)
 * Gear Getaway from Donkey Kong Country Returns (any Diddy Kong Amiibo)
 * Comet Observatory from Super Mario Galaxy (any Rosalina Amiibo)
 * Slide from Super Mario 64 (Toad or Toadette)
 * Battlerock Galaxy from Super Mario Galaxy (Dry Bones or Koopa Troopa)
 * Underground Theme from Super Mario Bros. (Piranha Plant, Goomba) (NEW)

DLC Songs

 * Bowser's Galaxy Generator from Super Mario Galaxy 2
 * Fossil Falls from Super Mario Odyssey
 * Peach's Castle from Super Mario 64
 * Mario Circuit from Mario Kart 7 (NEW)
 * Main Theme from Luigi's Mansion 3 (NEW)
 * Snow Land from Mario Kart: Super Circuit (NEW)
 * Airship Theme from Super Mario Bros. 3 (NEW)
 * Title Theme from Super Mario Maker 2 (NEW)
 * Delfino Plaza from Super Mario Sunshine
 * Rainbow Road from Mario Kart Wii
 * Bowser Battle 1 from Super Mario Odyssey (NEW)
 * Flower Garden from Super Mario World 2: Yoshi's Island (NEW)
 * Super Bell Hill from Super Mario 3D World (NEW)
 * Tostarena Ruins(Sand Kingdom) from Super Mario Odyssey (NEW)

Sonic Series

 * Rooftop Run - Day from Sonic Unleashed
 * Angel Island from Sonic the Hedgehog 3
 * Sonic Heroes from Sonic Heroes
 * City Escape from Sonic Adventure 2
 * Metal Harbor from Sonic Adventure 2
 * Palmtree Panic from Sonic CD
 * Seaside Hill from Sonic Heroes
 * Flying Battery from Sonic and Knuckles
 * A New Venture from Sonic Rush Adventure
 * Let the Speed Mend It from Sonic and the Secret Rings
 * His World from Sonic the Hedgehog (2006)
 * Misty Lake from Sonic and the Black Knight
 * Neo Green Hill from Sonic Advance
 * Route 99 from Sonic Advance 3
 * Windmill Isle - Day from Sonic Unleashed
 * Fist Bump from Sonic Forces
 * Frozen Factory from Sonic Lost World

Amiibo Songs

 * Reach for the Stars from Sonic Colors (any Sonic Amiibo)
 * Tornado Time from Sonic Lost World (Tails) (NEW)
 * Unknown From M.E. from Sonic Adventure 2 (Knuckles) (NEW)
 * Sonic Boom from Sonic CD (Amy)
 * Time Eater from Sonic Generations (Dr. Eggman)
 * Radical Highway from Sonic Adventure 2 (Shadow)
 * White Acropolis from Sonic the Hedgehog (2006) (Silver)
 * Vs. Metal Sonic from Sonic CD (Metal Sonic) (NEW)
 * Blizzard Peaks from Sonic Rush Adventure (Blaze)
 * Cool Edge - Day from Sonic Unleashed (Vector)
 * Balloon Park from Sonic the Hedgehog 3 (Espio)
 * Security Hall from Sonic Adventure 2 (Rouge)
 * Babylon Garden from Sonic Riders (Jet)
 * Metal Scratchin' from Sonic Rush (Eggman Nega)
 * Battle With Zavok from Sonic Lost World (Zavok)

DLC Songs

 * Windy Valley from Sonic Adventure
 * White Park, Act 2 from Sonic the Hedgehog 4, Episode 2
 * Emerald Beach from Sonic Battle
 * Catch Me If You Can from Sonic Riders: Zero Gravity (NEW)
 * Seven Rings In Hand from Sonic and the Secret Rings (NEW)
 * Casino Night from Sonic the Hedgehog 2 (NEW)
 * Door Into Summer from Knuckles' Chaotix (NEW)
 * Knight of the Wind from Sonic and the Black Knight (NEW)
 * Windy and Ripply... for Emerald Coast from Sonic Adventure 
 * Diamond Dust from Sonic 3D Blast
 * The Wicked Wild from Sonic and the Secret Rings (NEW)
 * Egg Albatross from Sonic Heroes (NEW)
 * We Can(Team Sonic Theme) from Sonic Heroes
 * Dreams Of An Absolution(Silver Theme) from Sonic the Hedgehog 2006 (NEW)
 * Free from Sonic Free Riders(NEW)

DLC
DLC will be released in packs. So far, there is confirmed to be 4 packs of DLC.

DLC Pack 1: Mario Mania!
This DLC pack features new Mario-related content. It features 3 new characters, a new Dream event at a Mario location, 8 new costumes, and 8 new music tracks.

DLC Pack 2: Sonic Style!
This DLC pack features new Sonic-related content. It features 3 new characters, a new Dream event at a Sonic location, 8 new costumes, and 8 new music tracks.

DLC Pack 3: Rookie Rave!
This DLC pack features 3 new Rookie characters, a new Dream event, 8 new costumes, and 8 new music tracks.

Trivia

 * Many of the Mario series voice clips are recycled from Mario Kart 8 and Super Mario Party
 * The following pairs have special victory animations:
 * Mario and Luigi
 * Mario and Peach
 * Mario and Bowser
 * Mario and Wario
 * Mario and Bowser Jr
 * Mario and Yoshi
 * Mario and Donkey Kong
 * Mario and Sonic
 * Mario and Austin
 * Luigi and Daisy
 * Luigi and Waluigi
 * Luigi and Rosalina
 * Luigi and Tails
 * Luigi and Caleb
 * Luigi and Yoshi
 * Peach and Daisy
 * Peach and Rosalina
 * Peach and Toadette
 * Peach and Pauline
 * Peach and Amy
 * Peach and Blaze
 * Peach and Alain
 * Peach and Olivia
 * Daisy and Blaze
 * Daisy and Katie
 * Daisy and Rosalina
 * Daisy and Amy
 * Bowser and Bowser Jr.
 * Bowser and Dry Bones
 * Bowser and Larry
 * Bowser and Dry Bowser
 * Bowser and Dr. Eggman
 * Wario and Waluigi
 * Wario and Knuckles
 * Waluigi and Shadow
 * Yoshi and Tails
 * Yoshi and Silver
 * Yoshi and Naomi
 * Yoshi and Shadow
 * Donkey Kong and Diddy Kong
 * Donkey Kong and Pauline
 * Donkey Kong and Knuckles
 * Donkey Kong and Vector
 * Donkey Kong and Zach
 * Bowser Jr. and Larry
 * Bowser Jr. and Metal Sonic
 * Diddy Kong and Espio
 * Diddy Kong and Katie
 * Diddy Kong and Ellie
 * Rosalina and Pauline
 * Rosalina and Rouge
 * Rosalina and Olivia
 * Rosalina and Tori
 * Toadette and Captain Toad
 * Toadette and Sticks
 * Toadette and Cassidy
 * Dry Bowser and Dry Bones
 * Dry Bowser and Eggman Nega
 * Sonic and Tails
 * Sonic and Knuckles
 * Sonic and Amy
 * Sonic and Dr. Eggman
 * Sonic and Shadow
 * Sonic and Silver
 * Sonic and Jet
 * Sonic and Classic Sonic
 * Sonic and Rookie
 * Sonic and Dr Eggman Nega
 * Tails and Saben
 * Tails and Ryan
 * Knuckles and Vector
 * Knuckles and Espio
 * Knuckles and Shadow
 * Knuckles and Silver
 * Knuckles and Rouge
 * Amy and Blaze
 * Amy and Rouge
 * Amy and Sticks
 * Amy and Mikayla
 * Dr. Eggman and Metal Sonic
 * Dr. Eggman and Eggman Nega
 * Dr. Eggman and Zavok
 * Shadow and Silver
 * Shadow and Metal Sonic
 * Shadow and Logan
 * Blaze and Rouge
 * Blaze and Silver
 * Silver and Espio
 * Vector and Espio
 * Vector and Brennan
 * Vector and Zach
 * Espio and Aaron
 * Sticks and Ellie
 * Sticks and Sunshine
 * Classic Sonic and Rookie
 * Austin and Aaron
 * Austin and Caleb
 * Logan and Caleb
 * Saben and Brennan
 * Saben and Jake
 * Saben and Zach
 * Jake and Sunshine
 * Ellie and Cassidy
 * Dani and Olivia
 * Dani and Naomi
 * Mario's special move is based on his spin attack from Super Mario Galaxy
 * The item box break and roulette sounds are recycled from Mario Kart 8
 * The Star theme in the Dream events is recycled from Mario Kart 8
 * The Speed Shoes theme in the Dream events is recycled from Sonic Adventure
 * The Bowser and Eggman Medley that is used consists of 4 of Bowser and Eggman's themes remixed. These include:
 * Castle Theme from Super Mario Bros.
 * Bowser Battle from Super Mario 64
 * Boss Theme from Sonic the Hedgehog 2
 * E.G.G.M.A.N. from Sonic Adventure 2
 * If you use Tails to rescue Logan, he will make an odd reference to Tails' Skypatrol and Tails Adventure
 * If you use Yoshi to rescue Olivia, she will make a reference to Yoshi's Crafted World
 * Before fighting any rival in story mode, if you use any of the playable villains, the dialogue will change specific to playable villains. All of the dialogue relates to the rival being shocked that the playable villain is fighting them
 * Before fighting Boo or King Boo as Luigi, either one will make a reference to Luigi's Mansion 3
 * Before fighting King K. Rool, if you use Donkey Kong or Diddy Kong, he will say special dialogue referring to the Donkey Kong Country series
 * Zazz reuses his "beat you like a drum" line from Sonic Lost World
 * The original "Gusty Garden Galaxy" theme from Super Mario Galaxy was used to announce the Mario Mania DLC pack
 * "Let's Make It!" from Sonic Adventure 2 was used to announce the Sonic Style DLC pack
 * The Snowboard Cross theme from Mario & Sonic at the Sochi 2014 Olympic Winter Games is used to announce the Rookie DLC pack