▲
2
▼
The game's reveal trailer on September 13, 2018 shows Mario being played in the levels "Waddlewing Warning!" and "Larry's Trigger Happy Castle". This is not doable in the final game as those are levels from New Super Luigi U, where Mario is not a playable character.
Reveal Trailer for New Super Mario Bros. U Deluxe:
https://www.youtube.com/watch?v=6wTFy-pJFMI?t=37
Evidence of the levels being from New Super Luigi U:
https://www.youtube.com/watch?v=VuT8JjMnVhM
https://www.youtube.com/watch?v=DNcegeMfLTc
https://www.youtube.com/watch?v=6wTFy-pJFMI?t=37
Evidence of the levels being from New Super Luigi U:
https://www.youtube.com/watch?v=VuT8JjMnVhM
https://www.youtube.com/watch?v=DNcegeMfLTc
▲
1
▼
By playing as Peachette in the final level of Peach's Castle, the real Peach will act confused before the fight plays as normal.
Related Games
New Super Mario Bros. U
New Super Mario Bros. Mii
New Super Luigi U
New Super Mario Bros. Wii
New Super Mario Bros.
New Super Mario Bros. 2
Mario & Sonic at the Sochi 2014 Olympic Winter Games
Mario's Cement Factory
Super Mario World: Super Mario Advance 2
Mario Pinball Land
Donkey Kong
Mario Kart DS
Mario Party DS
Mario & Sonic at the Rio 2016 Olympic Games
Donkey Kong Plus
Mario Kart 8 Deluxe
Wrecking Crew '98
Yoshi's New Island
Dr. Mario
Super Smash Bros. Ultimate
Super Mario Bros. Deluxe
Yoshi
Mario Party 7
Mario vs. Donkey Kong 2: March of the Minis
Puzzle & Dragons Z + Puzzle & Dragons: Super Mario Bros. Edition
Super Mario 3D Land
Mario Is Missing!
Wario's Woods
Super Mario Bros.
Mario + Rabbids Sparks of Hope
Super Mario Land 2: 6 Golden Coins
Mario Party 6
Super Mario Strikers
Mario Golf
Balloon Trip
Fortune Street
Luigi's Mansion
Mario Party 3
Mario Bros.
Mario Kart Tour
Super Smash Bros.
Captain Toad: Treasure Tracker
Sonic at the Olympic Games
Mario Kart 8 Deluxe: Booster Course Pass
Mario & Sonic at the Olympic Games
Mario Tennis Open
Paper Mario: The Thousand-Year Door
Super Mario Bros.: The Lost Levels
Paper Mario: The Thousand-Year Door
Mario Party 4