While New Super Mario Bros. U Deluxe, which includes both Mario U and Luigi U, doesn’t have the openness and level of exploration seen in Super Mario Odyssey, it still holds some pretty cool secrets. As a 2D Mario sidescroller, New Super Mario Bros. U has the series’ classic secret exits feature.
In each of the eight worlds, there is at least one level with a secret exit to be found. Once you find it, you’ll pull down a red flag instead and proceed to unlock secret levels or skip levels altogether. Some of these secret exits also build bridges to different worlds, effectively allowing players to skip significant chunks of the game.
Secret exits and world skips in New Super Mario Bros. U
While we recommend playing every single level in New Super Mario Bros. U Deluxe (it’s phenomenal), finding and using secret exits provides a bit of added fun, too. Plus, to actually play every level, you have to find the secret exits. In this guide, we’ll tell (and show) you how to find all 12 of the secret exits in New Super Mario Bros. U.
World 1: Acorn Plains
Past the checkpoint flag and near the end of Tilted Tunnel, you’ll jump on a large boulder that will shift upwards. A red ring will be above you. Above that will be a secret area that lets you run across the top of the level. Keep running until you get to a little ramp, jump again, and you’ll find yourself on an even higher ledge. Run until you drop down to a green pipe, and head for the red flag on the other side.
The first secret exit in New Super Mario Bros. U opens up a path to a secret level called A Blooper’s Secret Lair. Complete that level and a path to the Soda Jungle, world 5 (!), opens up.
World 2: Layer Cake Desert
Spike’s Spouting Sands
Right before the exit, you’ll run past a tall green pipe (the last star coin is right below it) and a final red arrow. Drop down from the red arrow pillar and run into the false wall. The warp pipe shoots you into the air toward the secret exit flag.
A new level in Layer Cake Desert, A Piranha Plants on Ice, will open up on the map. Complete that level to open a path to Soda Jungle once again.
World 3: Sparkling Waters
When you get to the room with all of the false walls, look for a sign pointing right at the top of a ledge. Get on top of that platform, turn back around, jump down, and quickly jump again. You need to wall jump twice to reach a secret area with a hidden door. Watching the video for this one really helps.
Reaching the secret exit unlocks a new level in Sparkling Waters called A Skyward Stalk. Complete the hidden level to get a new path to world 6, the Rock Candy Mines.
World 4: Frosted Glacier
Swaying Ghost House
This one is tricky. In the final room of the house, you have to hit a P Block, jump on temporary blocks, and scale to the top. The regular entrance is surrounded by a giant Boo and a circling group of smaller ones. To reach the secret exit, though, you have to go to the very top to reveal a false ceiling and secret door. To do so, you may need a power-up like the squirrel suit (or just mad jumping skills). The secret door leads to a different exit with the red flag (and the final star coin).
The secret exit unlocks a new level in Frosted Glacier called A Fliprus Lake. Complete the secret level and you’ll open a path to world 6, Rock Candy Mines.
World 5: Soda Jungle
Bridge over Poisoned Waters
You almost definitely need the squirrel suit for this one. After crossing over the two shifting bridges of blocks, you’ll see a lone block under a ledge. Knock out the nearby Koopa Troopa, grab his shell, and zip it down there to reveal a vine that stretches to the sky. Climb it and then hop up the ledges on the left. From the top ledge, glide across the sky to the right to reach the flag.
Using the secret exit lets you skip to a new level in Soda Jungle, Seesaw Bridge.
Go through the door on the second platform to the left when you enter the ghost house. This will bring you to an elevator ride room. Instead of going through the visible door when you reach the top, keep riding and hang to the left side. A false ceiling with a pathway to a secret door will be revealed. Go through the door and proceed to finish the level as usual, dropping down to the bottom door.
The secret exit opens a path to a new level in Soda Jungle, A Flight of the Para-Beetles. Complete that level to open a path to world 7, Meringue Clouds.
Right past the red ring is a series of swaying pipes to navigate. At the end, there’s a jutted-out edge with a Boo guarding it. Hop down and run into the false wall to reveal a warp pipe. Run through the small cave and up the warp pipe on the right side of the wall to appear right next to the secret exit flag.
The secret exit opens a path to a new level in Soda Jungle, Wiggler Stampede.
Rather than entering the pipe at the top of your final swim upwards to safety, swim all the way to the right. Another large pillar will drop down, revealing the third star coin and a warp pipe that leads to the secret flag.
The secret exit opens a path to Wiggler Stampede as well.
World 6: Rock Candy Mines
For this one, you need to be miniature (via a mini mushroom as shown in the video). Once you reach the top of the tower after scaling the green pipes, you’ll see a tiny green pipe to the right. Head through it to skip the boss fight, scale the next room (don’t forget the star coin on the left!), and head through the pipe to the secret flag.
The secret exit grants you access to a new Rock Candy Mines level, Thrilling Spine Coaster.
Walking Piranha Plants
Right past the three moving platforms with Piranha Plants, there’s a tall ledge. On the other side is a slightly jutted-out wall at the bottom. It’s a false wall that leads to a warp pipe and the secret exit.
The secret exit opens up a shortcut to the second entrance to Roy’s Conveyor Belt
World 7: Meringue Clouds
Spinning Spirit House
After coming through the upper-right door in the starting room, grab the spring and carry it all the way to the left. Use it to jump up top again, then drop down through the false floor below the upper-left corner. There’s a secret door there that leads to one final room. Avoid the ghosts and then emerge outside. Run free to the secret flag.
Finding the secret exit leads you to the alternate entrance of Ludwig’s Clockwork Tower.
World 8: Peach’s Castle
When you reach the long stretch of land with fireballs raining down, look for the P Block. Once you hit it, you’ll have to jump across several makeshift platforms until you see the pipe overhead. Jump up into the pipe to reach the secret exit.
The secret exit unlocks a new level in Peach’s Castle, Firefall Cliffs.
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