Secret Island

The Secret Island is unlocked when you complete the game. The Secret Island was first appeared in New Super Mario Bros. U and went on into New Super Luigi U and New Super Mario Bros. U Deluxe. Secret Island is Nabbit's home.

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Characters	Playable	Mario • Luigi • Yellow Toad • Blue Toad • Toadette** • Nabbit**/*** • Mii*
	Supporting	Princess Peach • Toad • Green Yoshi • Baby Yoshi (Balloon, Bubble, Glowing)
	Bosses	Bowser • Bowser Jr. • Koopalings (Lemmy Koopa · Morton Koopa Jr. · Larry Koopa · Wendy O. Koopa · Iggy Koopa · Roy Koopa · Ludwig von Koopa) • Boom Boom • Boss Sumo Bro • Kamek
Enemies	Enemies	Amp* • Baby Blooper* • Baby Dragoneel* • Balloon Goomba* • Banzai Bill • Banzai Bill Cannon • Big Amp* • Big Boo • Big Buzzy Beetle* • Big Piranha Plant • Big Venus Fire Trap** • Blooper • Blooper Nanny* • Bob-omb • Bomb • Bony Beetle • Boo • Boomerang Bro • Bowser Amp • Bramball • Broozer • Bulber* • Bullet Bill • Burner • Buzzy Beetle • Chain Chomp • Cheep Cheep • Cheep Chomp • Circling Boo Buddies • Clampy* • Cooligan • Deep Cheep** • Dragoneel • Dry Bones • Eep Cheep • Fire Bro • Fire Snake • Fish Bone • Flame Chomp • Fliprus • Foo • Fuzzy • Goomba • Goombrat • Grand Goomba • Gargantua Koopa Troopa • Grrrol • Hammer Bro • Heavy Para-Beetle • Hefty Goomba • Huckit Crab • Ice Bro • Jellybeam* • King Bill • Koopa Troopa • Lakitu • Magmaargh • Magmaw • Mecha Cheep* • Mechakoopa • Mega Cheep Cheep • Mega Dry Bones • Mega Deep Cheep** • Mega Eep Cheep** • Mega Fuzzy • Mega Grrrol • Mega Thwomp • Mega Urchin • Mega Wiggler • Meteor • Micro Goomba • Missile Bill • Monty Mole • Muncher • Nabbit • Para-Beetle • Parabomb • Paragoomba* • Paratroopa • Piranha Plant • Piranha Pod • Piranhacus Giganticus • Podoboo • Pokey • Porcupuffer • Prickly Goomba • River Piranha Plant • Rocky Wrench* • Scaredy Rat* • Sledge Bro • Spike Top • Spiny • Spiny Cheep Cheep • Spiny Egg • Stalking Piranha Plant • Stone Spike • Sumo Bro • Swooper* • Targeting Ted • Thwimp* • Thwomp • Torpedo Ted • Urchin • Venus Fire Trap • Venus Ice Trap • Waddlewing • Wiggler
Obstacles	Obstacles	Ball 'n' Chain • Bill Blaster • Bill Blaster Turret • Cannon • Cannonball* • Circus Ball • Current • Energy ring • Fire Bar • Ghost Block • Giant Ball 'n' Chain • Giant Cannonball • Huge Icicle • Huge Podoboo Cog • Icicle • Lava • Lava Fireball • Lava Geyser* • Mecha Hand • Poisoned Water • Quicksand • Red Skull Box • Sand Geyser • Skull Box* • Spike • Spiked Ball • Spike Pillar • Stone-Eye • Volcanic Smoke • Water Jet
Items	Items	1-Up Mushroom • 3-Up Moon • Berry • Blue Coin • Boost Star • Coin • Fire Flower • Frozen Coin • Green Coin • Hidden Coin • Ice Flower • Mini Mushroom • P-Acorn • Penguin Suit • POW Block • Propeller Mushroom • Red Coin • Super Acorn • Super Crown*** • Super Mushroom • Starman • Yoshi Egg
Objects	Objects	! Switch • ? Block • ? Switch • 3-Up Moon Block • Arrow lift • Bean Platform • Big Block • Blue Ring** • Bonecoaster • Bone Floor • Boost Block • Brick Block • Checkpoint Flag* • Cog • Coin Block • Cross Lift* • Donut Block • Flying ? Block • Goal Pole (red) • Goal ring* • Green Ring • Hammer Pendulum • Hidden Block • Ice Block • Ice Chunk* • Iron Block • Leaf Platform • Light Block • Limited Lift • Luigi Block** • Mario Brothers Floor • Mega ? Block • Note Block • Nut • P Switch • Paddle Platform* • Pendulum Platform • Pole • Red Ring • Remote-Control Platform* • Rolling log* • Scale Lift • Screwtop • Screwtop Lift • Screwtop Platform • Screwtop Shroom* • Seesaw Log Bridge • Seesaw Shroom* • Seesaw Shroom (blue)** • Slide Lift* • Snake Block • Star Lift • Stretch Shroom* • Stone block • Super Guide Block* • Switch-Lift** • Trampoline • Tree • Turning Floor • Water Bubble* • Wobble Rock*
Worlds and levels	Acorn Plains	Acorn Plains Way • Tilted Tunnel • Crushing-Cogs Tower • Yoshi Hill • Mushroom Heights • Rise of the Piranha Plants • Lemmy's Swingback Castle • Blooper's Secret Lair • Waddlewing Warning!*** • Crooked Cavern*** • Flame-Gear Tower*** • Rolling Yoshi Hills*** • Piranha Heights*** • Piranha Gardens*** • Lemmy's Lights-Out Castle*** • Cheep Chomp Chase***
	Layer-Cake Desert	Stone-Eye Zone • Perilous Pokey Cave • Fire Snake Cavern • Stoneslide Tower • Spike's Spouting Sands • Dry Desert Mushrooms • Blooming Lakitus • Morton's Compactor Castle • Piranha Plants on Ice • Piranha Plants on Ice • Spike's Tumbling Desert*** • Underground Grrrols*** • Piranhas in the Dark*** • Wind-Up Tower*** • The Walls Have Eyes*** • Stone Spike Conveyors*** • Spinning Sandstones*** • Morton's Lava-Block Castle*** • Slippery Rope Ladders***
	Sparkling Waters	Waterspout Beach • Tropical Refresher • Giant Skewer Tower • Haunted Shipwreck • Above the Cheep Cheep Seas • Urchin Shoals • Dragoneel's Undersea Grotto • Larry's Torpedo Castle • Skyward Stalk • Huckit Beach Resort*** • Urchin Reef Romp*** • Shish-Kebab Tower*** • Haunted Cargo Hold*** • The Great Geysers*** • The Great Geysers*** • Dragoneel Depths*** • Larry's Trigger-Happy Castle*** • Beanstalk Jungle***
	Frosted Glacier	Spinning Star Sky • Cooligan Fields • Freezing-Rain Tower • Prickly Goombas! • Scaling the Mountainside • Icicle Caverns • Swaying Ghost House • Fliprus Lake • Fliprus Lake • Broozers and Barrels*** • Cooligan Shrooms*** • Icicle Tower*** • Fire and Ice*** • Weighty Waddlewings*** • Ice-Slide Expressway*** • Peek-a-Boo Ghost House*** • Wendy's Thwomp Castle*** • Fliprus Floes***
	Soda Jungle	The Mighty Cannonship† • Jungle of the Giants • Bridge over Poisoned Waters • Bramball Woods • Snake Block Tower • Which-Way Labyrinth • Painted Swampland • Deepsea Ruins • Seesaw Bridge • Wiggler Stampede • Iggy's Volcanic Castle • Flight of the Para-Beetles • All Aboard!†/*** • Giant Swing-Along*** • Dancing Blocks, Poison Swamp*** • Heart of Bramball Woods*** • Stone-Snake Tower*** • Stone-Snake Tower*** • Painted Pipeworks*** • Deepsea Stone-Eyes*** • Sumo Bro Bridge*** • Wiggler Floodlands*** • Iggy's Swinging-Chains Castle*** • Para-Beetle Parade***
	Rock-Candy Mines	Fuzzy Clifftop • Porcupuffer Falls • Grinding-Stone Tower • Waddlewing's Nest • Light Blocks, Dark Tower • Walking Piranha Plants! • Thrilling Spine Coaster • Screwtop Tower • Screwtop Tower • Roy's Conveyor Castle • Mount Fuzzy*** • Porcu-Puffer Cavern*** • Smashing-Stone Tower*** • Spike's Seesaws*** • Light-Up-Lift Tower*** • Rising Piranhas*** • Spine Coaster Stowaways*** • Sumo Bro's Spinning Tower*** • Switch-Lift Express*** • Roy's Ironclad Castle***
	Meringue Clouds	Land of Flying Blocks • Seesaw Shrooms • Switchback Hill • Slide Lift Tower • Spinning Spirit House • Bouncy Cloud Boomerangs • A Quick Dip in the Sky • Snaking Above Mist Valley • Ludwig's Clockwork Castle • Boarding the Airship • Frozen Fuzzies*** • Wiggler Rodeo*** • Rainbow Skywalk*** • Stonecrush Tower*** • Vanishing Ghost House*** • Above the Bouncy Clouds*** • Flame Chomp Ferris Wheel*** • Three-Headed Snake Block*** • Ludwig's Block-Press Castle*** • Bowser Jr. Showdown***
	Peach's Castle	Meteor Moat • Magma-River Cruise • Rising Tides of Lava • Firefall Cliffs • Red-Hot Elevator Ride • The Final Battle • Magma Moat*** • Magmaw River Cruise*** • Hot Cogs*** • Firefall Rising*** • Current Event*** • The Final Battle***
	Superstar Road	Spine-Tingling Spine Coaster • Run for It • Swim for Your Life! • Hammerswing Caverns • Spinning Platforms of Doom • Fire Bar Cliffs • Lakitu! Lakitu! Lakitu! • Pendulum Castle • Follow that Shell! • Spine Coaster Connection*** • P Switch Peril*** • Star Coin Deep Dive*** • Hammerswing Hangout*** • Under Construction*** • Fire Bar Sprint*** • Cloudy Capers*** • Impossible Pendulums*** • Flying Squirrel Ovation***
	Coin Courses	World Coin-1 • World Coin-2 • World Coin-3 • World Coin-4 • World Coin-5 • World Coin-6 • World Coin-7 • World Coin-8
	Other	Secret Island
Challenge Mode	Time Attack	Time Attack Trial • Acorn Plains Speed Run • Full Speed Ahead • Stone-Eye Desert Dash • The Boo Ballet • The Boo-Ballet Encore • Icicle Skating • Huckit Hustle • Mini Mountaineer • Lurchin' Urchins • Penguin vs. Torpedo • Slick Slopes and Bullet Bills • The Haunted Propeller • Fliprus Crossing • Rickety Sprint • No-Cash Dash • Poison-Swamp Scramble • Swing into Action • Stoneslide Tower Climb • Screwtop It Up
	Coin Collection	Triple-Jump for Coins • Hot Hidden-Coin Hunt • Stingy Big Piranha Plants • Lakitu's Cloud Heist • Hot-Air Yoshi Ride • Ghost House Coin Curse • Perilous Coin Dodge • Waddlewing Wipeout • Prickly Goomba's Coinless Run • 200 Clifftop Coins • Dark Dark Coaster • Cloud-Top Coin Evasion • Attack of the Bob-ombs • Spine Coaster Coin Cruise • Castle Coin Bypass • Don't. Touch. Anything.
	1-Up Rally	The Goombrat Stomp • Stone-Eye Koopas • Goomba Bounce Bash • Penguin Bowling • Three Dry Bones • Bullet Bill 1-Up Bounce • Star Connection • Big Goomba Bounce Bash • Airship 1-Up Rally • Paratroopa Panic
	Special	Fire, Bro! • Graceful Glide • Mole to Goal • Marathon Glide • Bubble Up • Nonstop Flight • Be Gentle to Giants • Big Air at Sundown • Balancing Act • Bowser's Airship Sneak • Larry's Groundless Battle • No Climbing Allowed • The Trial of Bullet Bill Hill • Spin Jump, Get Dizzy • Mole to Goal Returns • Wobble and Rock • Seriously! Fire, Bro! • Elevator Out of Service • Castle Crawl • Express Elevator • Cashless Castle Crawl
	Boost Mode Challenges	Piranha Plant Hideaway • Coins in the Forecast • When Waddlewings Attack • The Perpetual Shell • Boost Block Coin Stalk • Icicle Falls • Fuzzy Alert! • The High Road • Three-Legged Lava Race • Fuzzy Cliff Climb • Thwomp Castle Cash Flow • Cloudy with a Chance of Fire • Ultimate Boost Blast
Further info	Further info	Gallery (Luigi U/Deluxe)
* - Exclusive to New Super Mario Bros. U • ** - Exclusive to New Super Mario Bros. U Deluxe • *** - Exclusive to New Super Luigi U † - Level before the world