Lake Lapcat

Lake Lapcat is an archipelago dedicated to cats found in Super Mario 3D World + Bowser's Fury, more precisely in Bowser's Fury. It is the kingdom where the whole standalone story takes place. It is an open-world, colorful and cat-themed kingdom mainly inhabited by various colored cats. Because of its theming around cats, nearly all of its elements, including trees, shrubs, flowers, and even the signs, are modified to include feline features.

Lake Lapcat has a grayish blue main color scheme, similar to the Lake Kingdom from Super Mario Odyssey. These colors are also used by many of the area's walls, pillars, and windows. On some walls and ledges, cat-based hieroglyphs can be spotted.

Lake Lapcat is home to a unique power-up, the Giga Bell, which sits on a pedestal.

While Fury Bowser is active, the sky becomes dark and the kingdom rainy, along with having some spike-shaped platforms plunged into the ground and walls. These platforms modify the terrain, and Mario is able to jump on them, sometimes even able to reach higher places.

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, one of which is collected by finding the five Cat Shine Shards around the island. Every few islands surround a Giga Bell that can be freed by collecting five Cat Shines.
 * Lakeside Giga Bell
 * Fur Step Island
 * Make the Lighthouse Shine
 * Junior's Graffiti Gratitude
 * Fury Shadow on Deck
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Scamper Shores
 * Make the Lighthouse Shine
 * Fury Shadow by the Shore
 * Key to the Cat Shine
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Pounce Bounce Isle
 * Make the Lighthouse Shine
 * Hurry! Jump High, Jump Fast!
 * Key to the Cat Shine
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Fort Flaptrap
 * Bully the Cat Bullies
 * Blue Coin Bustle
 * Show's Over, Cat Magikoopas
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Ruins Giga Bell
 * Slipskate Slope
 * Make the Lighthouse Shine
 * Blue Coin Bustle
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Clawswipe Colosseum
 * Clash with Cat Boom Boom
 * Cat Pom Pom's Counterattack
 * Final Bout with Cat Boom Boom
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Trickity Tower
 * So Close Yet So Far
 * Blue Coin Bustle
 * Hurry! Watch Your Step!
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Crisp Climb Castle
 * Make the Lighthouse Shine
 * Hurry! Fly through the Frost!
 * Fury Shadow on Ice
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Wasteland Giga Bell
 * Risky Whisker Island
 * Fury Shadow Hops to It
 * Feasting on Fuzzies
 * Hurry! Hop behind the Wall!
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Pipe Path Tower
 * Make the Lighthouse Shine
 * Blue Coin Bustle
 * Key to the Cat Shine
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Roiling Roller Isle
 * Make the Lighthouse Shine
 * Hurry! Hot Cross Run!
 * Key to the Cat Shine
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Mount Magmeow
 * Back Off, Cat Prince Bully!
 * Atop Mount Magmeow
 * Hurry! Steer the Switchboards!
 * Five Cat Shine Shards
 * Blast the Fury Blocks
 * Lucky Isle
 * 1st Lucky Shine
 * 2nd Lucky Shine
 * 3rd Lucky Shine
 * 4th Lucky Shine
 * 5th Lucky Shine

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 each of them are counted individually and they are all labeled as from Lake Lapcat, the Cat Shines are usually found within a certain Giga Bell sector.

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 will need to spin to raise a platform, and then climb the platform to reach it.
 * Shoreside Rabbit Plays Tag
 * Hurry! Dash and Dive!
 * Lost Kitten by the Shore

Ruins Giga Bell

 * Ruins Rabbit Plays Tag
 * Go with the Floe
 * 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

Wasteland Giga Bell

 * Footprint Free-for-all
 * Spin, Scramble, Shine
 * On the Floodgate's Edge
 * Hurry! Climb the Falls!
 * Gazing Over the Falls
 * Surprise Prizefight
 * Jump and Thump in the Clouds

Collectibles
Lake Lapcat features Cat Shines, collectibles that are scattered across all the kingdom, similar to Power Stars, Shine Sprites and Power Moons. These shines are used to awaken the Giga Bell's power, in sufficient quantities. The associated lighthouses on each island are cleansed of goop once a Cat Shine is collected. Five Cat Shine Shards also appear per island, which give a Cat Shine once they are all collected. Coins also appear throughout Lake Lapcat.