Secret Veterans
Secret Newcomers
Secret New Stages
- Subspace - Super Smash Bros. Brawl (How to Unlock: Clear Event Match.)
- Bowser's Castle - Super Mario (How to Unlock: Unlock Bowser Jr.)
- Paper Mario 2 - Paper Mario (How to Unlock: Collect 50 unique Trophies.)
- Gang-Plank Galleon (Stage Boss: King K. Rool) - Donkey Kong Country (How to Unlock: Hit more than 2500 ft. in Home-Run Contest.)
- Artifact Temple (Stage Boss: Meta Ridley) - Metroid Prime (How to Unlock: Play on all 3 Target Blast stages.)
- Gyromite - Gyromite (How to Unlock: Perform Guided Robo Beam [R.O.B.'s Final Smash].)
- Mechanical Island (Stage Boss: Phantom Meta) - New Valver Heroes (How to Unlock: Place 1st in Solo Smash Run as Alvin.)
- Flipnote Studio - Flipnote Studio (How to Unlock: Get 100 KOs in 3-Minute Smash as Alvin.)
- Nintendo Land - Nintendo Land (How to Unlock: Clear the True All-Star Mode on Normal.)
- Tetris - Tetris (How to Unlock: Unlock 15 Stages.)
Secret Returning Stages
- Meta Crystal - Super Smash Bros. (64) (How to Unlock: Clear Classic Mode on intensity 7.5 or higher.)
- Super Mario Maker - Super Mario Maker (Smash 4) (How to Unlock: Create 3 Stages in the Stage Builder.)
- Kongo Jungle - Donkey Kong Country (64) (How to Unlock: Clear All-Star Mode.)
- Hyrule Castle - The Legend of Zelda (64) (How to Unlock: Get 120 KOs in Endless Smash as Link.)
- Pirate Ship - The Legend of Zelda: The Wind Waker (Brawl) (How to Unlock: Unlock Toon Link.)
- Dream Land - Kirby (64) (How to Unlock: Perform Ultra Sword [Kirby's Final Smash].)
- Fountain of Dreams - Kirby's Adventure (Melee) (How to Unlock: Place 1st in Solo Smash Run as Kirby.)
- Dream Land GB - Kirby's Dream Land (Smash 4 3DS) (How to Unlock: Clear Boss Battles on Normal or higher.)
- Saffron City - Pokémon Red & Pokémon Blue (64) (How to Unlock: Unlock Jigglypuff.)
- Big Blue - F-Zero (Melee) (How to Unlock: Perform Blue Falcon [Captain Falcon's Final Smash].)
- Magicant (Stage Enemy: Flying Man) - EarthBound Beginnings (Smash 4 3DS) (How to Unlock: Play as Ness 5 times.)
- Arena Ferox - Fire Emblem Awakening (Smash 4 3DS) (How to Unlock: Unlock Lucina.)
- Flat Zone X - Game & Watch (Smash 4 Wii U) (How to Unlock: Destroy 100 Blocks in Trophy Rush as Mr. Game & Watch.)
- Reset Bomb Forest - Kid Icarus: Uprising (Smash 4 3DS) (How to Unlock: Perform Dark Pit Staff [Dark Pit's Final Smash].)
- Garden of Hope - Pikmin 3 (Smash 4 Wii U) (How to Unlock: Perform End of Day [Olimar/Alph's Final Smash].)
- Duck Hunt - Duck Hunt (Smash 4) (How to Unlock: Unlock Duck Hunt.)
- Balloon Fight - Balloon Fight (Smash 4 3DS) (How to Unlock: Play as Villager 5 times.)
- Find Mii (Stage Boss: Dark Emperor) - Find Mii II (Smash 4 3DS) (How to Unlock: Place 1st in Solo Smash Run with 3 characters.)
- Tomodachi Life - Tomodachi Life (Smash 4 3DS) (How to Unlock: Collect 100 unique Trophies.)