New Super Mario Bros. U Deluxe
New Super Mario Bros. U Deluxe
January 11, 2019
Add Trivia

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.
person CuriousUserX90 calendar_month November 27, 2023
Reveal Trailer for New Super Mario Bros. U Deluxe:

Evidence of the levels being from New Super Luigi U:
Attachment In the 1.0 version of the game's Chinese release, the POW Blocks are listed with "]0[" on them instead of "POW". This would later be changed in the 1.0.1 update.
By playing as Peachette in the final level of Peach's Castle, the real Peach will act confused before the fight plays as normal.