New Donk City Hall
New Donk City Hall (ニュードンク市庁舎, New Donk City Hall) is a playable stage that appears in Super Smash Bros. Ultimate. It takes place around New Donk City, part of the Metro Kingdom from Super Mario Odyssey. Dr. Mario is fought here for his unlocking battle.
This stage begins on the ground level. As the match progresses, a platform will periodically appear and carry the fighters up New Donk City Hall, stopping at two spots along the way up before getting to the very top. There are four variations of the second stop: two of which have the skyscraper in the center with different soft platform layouts, and the other two being either positioned to the left or right side of the building. After arriving at the top, the stage platform will then carry the fighters back down to the ground level for the cycle to repeat.
A unique feature to the stage is its dynamic background music: The Super Mario Players (except the drummer, who is already at the ground level) and Pauline will float by in the background, and if a fighter touches one of them, they will add their instrument to the music, or vocals in Pauline's case. This only occurs if the music is set to Jump Up, Super Star! or Ground Theme (Band Performance) - Super Mario Bros. (in the latter case, Pauline does not appear). The Odyssey, Mario's airship that he uses to venture to the different kingdoms in Super Mario Odyssey, flies in the background of the top of the city hall. Captain Toad is also in the background in this area, and he appears more consistently when music from his game is playing.
When hazards are turned off, all moving platforms, except the transformation platform, do not move. Pauline and The Super Mario Players are also absent, which means the music will not dynamically change, even if set to the songs listed above.
Ω form and Battlefield form
The Ω form and Battlefield form are suspended in the air and their main platform is reminiscent of New Donk City Hall, such as the floor resembling the building's rooftops and the walls resembling the building's facade. The stage is also the same size and shape as Final Destination and Battlefield, respectively. New Donk City Hall and the surrounding area is absent. The three soft platforms of the Battlefield form resemble the floating soft platforms that appear in certain stops of the regular form.
This stage is based around the city hall of New Donk City of the Metro Kingdom, which is the eighth kingdom Mario and Cappy visit in Super Mario Odyssey. The duo starts off in a rainy New Donk City as a Mechawiggler, reigning over the city hall, is in control of the city's electricity. Mayor Pauline, upon seeing Mario visiting, asks him to take care of the creature. After Mario defeats the Mechawiggler, she invites him to New Donk City's upcoming festival to show her gratitude; however, she needs four backup musicians to perform in its musical number and tasks Mario with recruiting them. Mario recruits a drummer, a guitarist, a bassist, and a trumpeter to form The Super Mario Players with Pauline as the singer. After Mario restores power to New Donk City, the festivities begin with The Super Mario Players performing "Jump Up, Super Star!" on a stage built on New Donk City Hall.
Captain Toad originates from Super Mario Galaxy and appeared in his own exclusive puzzle levels in Super Mario 3D World. This lead to the creation of Captain Toad: Treasure Tracker, which later got ported to the Nintendo Switch. He makes several cameos within Super Mario Odyssey, including on a long girder located behind New Donk City Hall. Interacting with him gives Mario a Power Moon.