Classic Mode

Stage Enemies
Stage 1 The Legend of Zelda, Golden Sun, Xenoblade or The Wonderful 101 universe (Link, Zelda, Sheik, Ganondorf, Ghirahim, Skull Kid, Impa, Midna, Lana, Toon Link, Isaac, Shulk, Wonder Red)
Stage 2 Donkey Kong, Yoshi or WarioWare universe (Donkey Kong, Diddy Kong, King K. Rool, Dixie Kong, Yoshi, Kamek, Wario, Captain Syrup, Ashley)
Stage 3 Pokémon, Wii Fit or Splatoon universe (Pikachu, Charizard, Lucario, Jigglypuff, Greninja, Mewtwo, Zoroark, Sceptile, Genesect, Dusknoir, Wii Fit Trainer, Inkling)
Stage 4 Fire Emblem or EarthBound universe (Marth, Ike, Robin, Chrom, Lucina, Roy, Ness, Lucas)
DLC Stage 1 King Boo, Tetra, Galacta Knight, Plasm Wraith, Isabelle
Bonus Stage 1 Break the Targets
Stage 5 Kirby or Animal Crossing universe (Kirby, Meta Knight, King Dedede, Bandana Dee, Knuckle Joe, Magolor, Elline, Villager)
Stage 6 Metroid, Kid Icarus or Pikmin universe (Samus, Zero Suit Samus, Ridley, Sylux, Weavel, Dark Samus, Pit, Palutena, Dark Pit, Pikmin & Olimar)
Stage 7 Star Fox, F-Zero or Sin and Punishment universe (Fox McCloud, Falco Lombardi, Wolf O'Donnell, Krystal, Slippy Toad, Peppy Hare, Captain Falcon, Samurai Goroh, Black Shadow, Isa Jo)
DLC Stage 2 Weavile, Corrin, Dillon, Andy Jones, Starfy
Stage 8 Super Mario Bros. universe (Mario, Luigi, Peach, Bowser, Bowser Jr., Rosalina & Luma, Captain Toad, Waluigi, Geno, Dr. Mario)
Stage 9 Retro universes (Mr. Game & Watch, Duck Hunt, Ice Climbers, R.O.B., Little Mac, Takamaru, Mach Rider, Balloon Fighter, Excitebiker, Sukapon)
Stage 10 Third-party universes (Sonic the Hedgehog, Solid Snake, Mega Man, Pac-Man, Bomberman, Rayman, Shovel Knight, Black Mage, Professor Layton)
DLC Stage 3 Prince Sable, Lip, Ryu, Klonoa, Banjo & Kazooie
Bonus Stage 2 Board the Platforms
Stage 11 Free for all with three computers
Final Stage Master Hand / Crazy Hand / Master Core Battle