Super Mario 3D World + Bowser's Fury

Super Mario 3D World + Bowser's Fury is an upcoming expanded port of Super Mario 3D World for the Nintendo Switch, set to be released on February 12, 2021 as part of the 35th anniversary of Super Mario Bros. It will contain a new "Bowser's Fury" mode, with at least one world not seen in the original game. The game will also support local wireless and online play, both being absent from the original game.

Gameplay

 * The player's movement speed has been increased, thus allowing for courses to be cleared quicker.
 * Character movement is no longer restricted to only eight directions.
 * Players can climb higher when in their Cat forms, compared to in the original game.
 * Player characters are now able to roll in midair.
 * Up to four players can team up or race together in multiplayer mode, which supports both local wireless and Nintendo Switch Online connections.

Aesthetic

 * The game's graphics have been slightly updated.
 * The UI for lives and coins lacks the "×" icon between the image and numbers, while the shadows have been removed.

Other

 * The game has amiibo support, with Cat Mario and Cat Peach amiibo figures launching alongside the game.

Bowser's Fury
Bowser's Fury is a new mode to this game. It stars Mario and Bowser Jr. working together to save an unnamed area from Bowser who appears to have been corrupted by an unknown dark power. The lighthouses on the island are covered in a black ink-like substance, similar to the black paint from Paper Mario: Color Splash. The waters are also covered in this substance as well as having large spiked pillars sticking out of it. In the center of it all lies Bowser's shell.

Features

 * The new area for this mode takes place on an island inhabited by cats and features lighthouses. In the center is a giant dormant Super Bell, which can only be activated with the power of light. The area appears to be sandbox-styled similar to Super Mario Odyssey, and Mario can run around the island, climb up the lighthouses, and explore the surrounding waters with Plessie. This place makes use of Cat Mario's abilities.
 * Bowser Jr. makes an appearance as an ally. His unique abilities include being able to fly with his Junior Clown Car, perform a Ground Pound, and use his Magic Paintbrush to paint on question marks on walls to reveal hidden power-ups. It is unknown if he is a new playable character or an AI-controlled partner.
 * It is also unknown if Bowser's Fury is single-player or multiplayer or if Luigi, Peach, Toad, and Rosalina appear playable in the mode.
 * A giant, dark version of Bowser appears as the villain, who terrorizes the level by breathing streams of fire.
 * New cat variations of enemies are featured, though unlike Cat Goombas and Cat Bullet Bills, their cat appearances are only aesthetic changes, not gaining any new abilities. Enemies and bosses like this include:
 * Cheep Cheeps
 * Spikes
 * Piranha Plants
 * Conkdors
 * Stingbies
 * Boomerang Bros
 * Biddybuds
 * Goombas, though they behave like regular Goombas and keep their brown color scheme instead of having yellow fur and the diving ability.
 * Pom Pom
 * There is a giant variation of the Super Bell with whiskers, which turns Mario into a giant variation of Cat Mario, slightly resembling a lion.
 * The island introduces a red variation of the Jump Panel.
 * A new stage gimmick involves Mario performing a handstand on it, similar to Trees, before springing off into the distance.
 * Plessie has the ability to dive underwater before jumping. There are also new visual effects for its high jump, and can also be performed in single-player, whereas in multiplayer, all players must jump at the same time to activate it.
 * Giant gold blocks appear, which can be broken by Bowser's fire to reveal several coins.
 * This mode introduces an unnamed new species of cat characters.
 * When Bowser attacks the level, a darker variation of these cats make an appearance following Mario.
 * Rather than collecting Green Stars, the player collects medals that resemble a cat's head. Additionally, instead of a Goal Pole, there are sun-based collectibles with a cat's face on them, similar to Power Stars, Shine Sprites, and Power Moons.
 * The animation that Mario does when collecting the cat-sun based collectibles resembles the animation when collecting a non-story-related Power Moon in Super Mario Odyssey.