Lake Lapcat

Lake Lapcat is a cat-themed archipelago exclusive to the Bowser's Fury campaign of Super Mario 3D World + Bowser's Fury. During the introductory cutscene of the campaign, Mario falls through an M-shaped portal made of black goop, which transports him from the Mushroom Kingdom to Lake Lapcat. It is a colorful, open area primarily inhabited by various colored kittens, including calico kittens and their Oyaneko. To match this theming around cats, nearly all of the elements of Lake Lapcat, including signs, archways, trees, shrubs, flowers, rainbows, and even the sun, include feline features such as fur, tails, and cat ears. Additionally, cat-themed variations of little birds, as well as enemies and bosses that appear in the Super Mario 3D World campaign, can be found throughout the area with the same modifications. However, all of these cat-like enemies function identically across both campaigns, with the exception of Cat Goombas, which are darker and do not dive. Despite this, Cat Bullet Bills retain their homing functionality.

Lake Lapcat is entirely surrounded by black goop that Mario and Bowser Jr. must work to remove throughout the course of the campaign by collecting Cat Shines. In the middle of the lake is the Fury Sun, a large mass of black goop that protects Fury Bowser while he is not active. When Fury Bowser becomes active, the clear daytime sky changes to nighttime during an intense rainstorm, and he shoots Fury Spikes that plunge into the ground and walls, becoming platforms that Mario can jump on and traverse areas differently with. While collecting a Cat Shine during Fury Bowser's rampages forces him to retreat, he can only be directly battled through a power-up unique to Lake Lapcat, the Giga Bell. Three Giga Bells can be found on large pedestals across the archipelago, each of which correspond to a set of four islands that share a similar visual theme.

Islands
Lake Lapcat is split into multiple different islands. Every island contains a lighthouse that is covered in goop. By collecting the first Cat Shine of the island, the goop will be removed and the lighthouse's light will get rid of the goop nearby. Every island contains five Cat Shines that can be collected. Three of these are obtained through unique challenges (though some are reused between islands), one of these is obtained by collecting the five Cat Shine Shards around the island, and another of these is hidden behind a set of Fury Blocks somewhere on the island that Fury Bowser can destroy with his attacks. Every four islands surround a Giga Bell that is initially unusable but can be restored by collecting a certain number of Cat Shines which increases as the game progresses.
 * Lakeside Giga Bell
 * Fur Step Island
 * Scamper Shores
 * Pounce Bounce Isle
 * Fort Flaptrap


 * Ruins Giga Bell
 * Slipskate Slope
 * Clawswipe Colosseum
 * Trickity Tower
 * Crisp Climb Castle


 * Wasteland Giga Bell
 * Risky Whisker Island
 * Pipe Path Tower
 * Roiling Roller Isle
 * Mount Magmeow


 * Lucky Isle

Cat Shines
In addition to the ones found on the islands themselves, there are also 35 individual Cat Shines scattered around Lake Lapcat as a whole. While they are each counted individually and labeled as being from Lake Lapcat, they are usually found within a certain Giga Bell sector. Some are initially covered in black goo, making them unaccessible until a nearby lighthouse is lit up, removing the goo.

Lakeside Giga Bell

 * Climb to the Shine :Cat Mario is needed to obtain this Cat Shine. In between Pounce Bounce Isle and Fort Flaptrap, there is an island with a Cat Wheel that Cat Mario must spin to raise a platform, which he may then climb to reach the Cat Shine.
 * Shoreside Rabbit Plays Tag : Obtained by making contact with a large rabbit that flees from Mario whenever he approaches it.
 * Hurry! Dash and Dive!
 * Lost Kitten by the Shore: Obtained by finding a calico kitten located in the Lakeside area back to its parent, which sits by the Giga Bell.
 * Bounce and Trounce in the Clouds
 * Toad Brigade: Lost Leader :Can only be obtained after the story is completed. Near the gate to Scamper Shores, Captain Toad can be seen being chased by a group of Cat Biddybuds. Once all of them are defeated, Captain Toad will award Mario with the Cat Shine.
 * Plessie Medal Collector
 * Plessie Medal Catcher

Ruins Giga Bell

 * Ruins Rabbit Plays Tag : Obtained by making contact with a large rabbit that flees from Mario whenever he approaches it.
 * Go with the Floe : Floats through the air and can be reached from the top of a moving ice floe when the two align.
 * Hurry! Slide through the Sky!
 * Dash and Smash in the Clouds
 * Slippery Skirmish
 * Gazing Down at the Islands
 * Hurry! Swim and Slide!
 * Cold Cove Combat
 * Lost Kittens near the Ruins : Obtained by finding three calico kittens located in the Ruins area back to its parent, which sits by the Giga Bell. Cannot be obtained until after the lost kitten Cat Shine in the Lakeside area has been obtained.
 * Lake Rabbit Plays Tag : Obtained by making contact with a large rabbit that flees from Mario whenever he approaches it.
 * Toad Brigade: Stuck under the Slope : Can only be obtained after the main story is completed by finding Yellow Toad. His location is under a part of Slipskate Slope. To find him, the player must fall under the island near the start of the slope, and quickly go to the ledge where Yellow Toad is.
 * Toad Brigade: Cuddly Castaway : Can only be obtained after the main story is completed by finding Banktoad on a small island located within black goop that can be reached using spring objects on other nearby small islands.
 * Plessie Medal Mania

Wasteland Giga Bell

 * Footprint Free-for-all
 * Spin, Scramble, Shine
 * On the Floodgate's Edge : Located atop the end of a large floodgate, some sections of which are made out of Fury Blocks. It can be accessed from Pipe Path Tower.
 * Hurry! Climb the Falls!
 * Gazing Over the Falls
 * Surprise Prizefight
 * Jump and Thump in the Clouds
 * Wasteland Rabbit Plays Tag : Obtained by making contact with a large rabbit that flees from Mario whenever he approaches it.
 * Lost Kittens in the Wasteland : Obtained by finding five calico kittens located in the Wasteland area back to its parent, which sits by the Giga Bell. Cannot be obtained until after the lost kitten Cat Shines in the Lakeside and Ruins areas have been obtained.
 * Shining on a Hidden Isle : Located on a small island surrounded by black goop that Mario can use Plessie's high jump to reach.
 * Hurry! Slip to the Shine!
 * Gazing Down at Lava : Located on a small floating island which circles around above the peak of Mount Magmeow. If Mario climbs all the way to the top of the mountain and waits for the island to arrive, then he may use the Cat Mario form to climb a short wall to the top of the island where the Cat Shine is.
 * Toad Brigade: Hot Pursuit : Can only be obtained after the main story has been completed, at which point Hint Toad appears on Mount Magmeow just below the peak, where a Cat Conkdor is attempting to attack him; if this Conkdor is defeated, then Hint Toad awards Mario with the Cat Shine.
 * Plessie Medal Master

Collectibles
Lake Lapcat features Cat Shines, collectibles that are scattered throughout the kingdom, similarly to Power Stars, Shine Sprites and Power Moons of other games. These shines are used to awaken the power of the Giga Bells once enough have been collected. The lighthouses on each island are cleansed of goop once the first Cat Shine on that island is collected. Five Cat Shine Shards also appear per island, which give a Cat Shine once they are all collected. Plessie Medals appear in various locations on the lake and grant Cat Shines if they are collected fast enough. Coins also appear throughout Lake Lapcat.