Super Mario 3D World: Flower-9 -- Towering Sunshine Seaside

You have 100 seconds to start. Set against a beautiful sunset, you can see an enormous stack of Goombas. Go to the left first. Grab some clocks and hit some item blocks. Some of them will turn into Cannon Boxes. Ignore them for now and grab a Fire Flower. To the far left are four torches and a shorter stack of Goombas with a Fire Bro. It will take too long to wait for the Fire Bro to light the torches, so light them yourself. This will make the first Green Star appear. Use fireballs or cannonballs on the Goombas and Fire Bro. Go to the right, grab a Cannon Box if you haven't already, and use it to defeat the Fire Bros on the smaller stacks of Goombas. Go through the clear pipe. This will take you to the cloud with the second Green Star. To the far right, in a corner, is the third Green Star. Go back to the very tall stack and aim at the Goombas. This may take a while to clear them all out. Once all of the Fire Bros have been defeated, a warp box to the flag will appear.

There are no stamps in World Flower.

Super Mario 3D World: Flower-7 -- Pipeline Boom Lagoon

Grab the Cannon Box and cross the water with the Madpoles to reach the pipe. Hit the item blocks to form bridges so you can reach the crates above for a Mushroom. Nearby is a Goomba sand sculpture that contains Microgoombas. Drop down into the water and you'll find Rammerheads and Bloopers. There are some gray bricks to the far right. Break them with the Cannon Box for the first Green Star. Swim up for the warp box to the midpoint.

There are spike blocks in the water here. Swim up between the spike blocks to find more spike blocks and Bloopers, near the second Green Star. Swim down, following the arrow, then break the gray bricks for a Green Ring. The Green Coins will give you the third Green Star. Use cannonballs to make collecting the coins easier. Swim up, to the left of the green pipe, for a clear pipe that takes you to a green pipe and two Moneybags. The green pipe will take you to the flagpole and a Bowser sand sculpture, which contains coins.

There are no stamps in World Flower.

Super Mario 3D World: Star-9 -- Cosmic Cannon Cluster

You'll need 210 Green Stars to unlock this level. You may want to bring a Super Bell. There is a switchboard at the start of the level. Stand on the switchboard to start moving past Para Dry Bones and cannons. Hit the cannons for a Cannon Cap. The path loops around to four item blocks floating in space. Charge up your cannon and aim it at the blocks. It's a little difficult when you're moving. Hitting the item blocks will make blocks extend so you can reach the stamp. Quickly return to the switchboard before the blocks disappear. Follow the path to solid ground. There are some Spinies here. On the back wall are several cannons. To climb up the wall without a Super Bell, you'll have to bounce off the cannon balls as they appear. At the top, you'll find two cracked walls. The one on the right has the first Green Star. The left wall has coins. Take the pipe underwater.

This part scrolls automatically. There are several cannons underwater. Blast the item blocks and POW Blocks for coins. Stay towards the bottom so you can blast the brick blocks under the arch on the floor. The second Green Star is hidden here. The pipe takes you to the midpoint. There are more switchboards here and ! Switches to hit. You can only hit them with charged shots, so aim well. The rails dead end without rail guards, so change directions before you fall off. Hit the second ! Switch so the track will lead you to the third Green Star. You'll need a well-aimed charge shot to hit it without the switchboard falling off the rails. Switch back to the main track, then keep hitting switches until you reach the flagpole. You'll need to bounce off the cannonballs to reach the flag.

The stamp is of a Cannon Cap.

Super Mario 3D World: 3-5 -- Pipeline Lagoon

Despite World 3 supposedly having an ice theme, this level takes you to the beach. There are hidden blocks with coins, as well as hidden Moneybags. In the water are three Goombas in spiky inner tubes. Take the pipe to a different part of the beach and go underwater. There are lots of Cheep-Cheep and Porcupuffers here. You'll find pipes in the walls and the floor. Grab an item from the random item block if you like. Where you first find the Porcupuffers, swim up to the ceiling. You'll find that the water rises, allowing you to reach the first Green Star in an alcove. Go through the pipe, which takes you past a sunken ship. There are coins and clocks along the way.

The pipe will take you to the midpoint. Get back in the water and swim towards the ceiling to find a hidden room with the stamp and a Cannon Box. Go back into the water and drop down near the coin rings, then swim left. Aim the Cannon Box at the crack in the wall. This reveals a pipe to the second Green Star and stacks of coins. Return and use the Cannon Box on the Porcupuffers ahead. Keep going to the right, then swim up near the green pipe. You'll find a clear pipe that leads to the third Green Star and a Moneybag. Take the pipe in the area to the flag.

The stamp is of a Cheep-Cheep.

Super Mario 3D World: 2- Castle -- Bowser's Bullet Bill Brigade

This level is an automatically scrolling level. There's a tank procession and you have to get past it. The blasters fire Bullet Bills at you and soldiers walk in formation on the ground. Pound the crates on the tanks so you can reach things. Get the Fire Flower and hit the far right item block on a different tank to get a Cannon Box. It will automatically fire a projectile in the direction you're facing. Charge the shot by holding (X) or (Y) to increase the range. Try not to run into any enemies so you can keep it. You'll need it. Get the Red Coins if you like. The blasters on brick blocks will turn into Cannon Boxes if you destroy the brick blocks.

The tanks will disappear for a while as you go around a corner. There are Fire Piranha Plants here. In the middle of three of them is the first Green Star. Soon, you'll come across a tank with just a crate on it. The second Star Coin is in it. There's a tank with some grating on it. Destroy the crates and jump onto the grating to find the stamp. At the end of the procession, you'll find a wall with Bowser's seal. Use the Cannon Box to break the wall for the third Star Coin. Go through the pipe and you'll battle Boom Boom. He'll spin around, then stop when he's dizzy. Stomp him, and he'll go into a shell cycle. Stomp him again and he'll go into a shell cycle while invisible. He'll also try to attack while invisible. After three hits, he will be defeated. Coins and a warp box will appear. This will take you to the flagpole, where the yellow Sprixie Princess is trapped in a jar. Land on the flagpole to break the jar. She'll get a hammer and build a clear pipe to World 3.

The stamp is of Boom Boom.