World 1 (Super Mario 3D Land)

World 1 is the first world in Super Mario 3D Land. It takes place in a green field with flowers, pipes and hills in the background. It features five levels, a Mystery Box, and a Toad House. As the start of Mario's adventure, the levels of World 1 are rather basic.

Layout
This first level of the game takes place in a simple grassland area with Princess Peach's Castle and the Tanooki-tailed Tree visible in the background. When Mario starts, he crosses a small bridge with a leaping Cheep-Cheep to an area with two Brick Blocks along with a Question Block that has a Super Leaf inside. He then crosses another stream. Soon after, an area with Brick Blocks and bushes in the ground are found.If Mario goes off the nearby fence there is a crate blocking a tunnel with a 1-up mushroom in it. Also, on the blocks that hold the tunnel there is a bird that flies away when you approach it, revealing a 1-up mushroom. Close to this area is a small wall and two Elevators to help Mario get to the top. Above the cliff, there are many dandelions, some trees, and two Goombas. Notice that the player can blow into the microphone or manually destroy the dandelions, which can sometimes expose coins. Ahead is a castle-like wall and many Brick Blocks. In one of them is hidden a gear that makes the ground under it rise when Mario spins it by swinging the Tanooki-tail of his Tanooki Suit. Above is a small roof with Crates. After the plumber exits this area, he can use a pair of Binoculars to see Toad attempting to teach how to jump on the Flagpole. Mario can head forward to some Tail Goombas, Brick Blocks, and Jump Blocks. Some land platforms and wooden bridges are found in an narrow path, leading to more Tail Goombas and a Grand Tail Goomba. A small island is in the middle of pond up ahead, with coloured blocks and the Goal Pole.

Star Medals

 * Star Medal 1: Just across the first river, on the south end of the second landmass, there are four platforms, divided by the river and connected by a tightrope. On this tightrope is the Star Medal.
 * Star Medal 2: Near the Midway Flag, there will be a tree. By climbing the tree, the player can see some jump blocks, which will lead him/her to a platform with a Warp Pipe. Down this pipe, there will be several large used blocks stacked together. A block floating near the others (which appears to be stacked on top of another used block) will have the Star Medal.
 * Star Medal 3: Near the end of the stage, there will be several platforms and a bridge, with a tightrope connecting them. The Star Medal will be floating above the tightrope.

Layout
This is the first underground level. The level starts with Mario in front of a torch. A Ball 'n' Chain is swinging near this place. After passing the obstacle, he will find two Goombas, two Brick Blocks and a Question Block with a Fire Flower inside. Ahead, there are some crates that Mario can destroy or only jump over them. A Inky Piranha Plant is found and, just after, more Brick Blocks. Near to them, there is a spinning platform with another Inky Piranha Plant. In the next area, are found two rectangular ? Blocks, stacked Goombas, many Brick Blocks and a Checkpoint Flag. Soon after, Mario arrives in a small room with a single coin. If he touches it, a trail of coins will appear. After leaving this room, Mario will face with more ? Blocks, Koopa Troopas, stacked Goombas and another Ball 'n' Chain. Some platforms are flying in a small gap and another Inky Piranha Plant can be defeated. Mario can grab a blue Clock. A bridge with three Ball 'n' Chains must be crossed. In the other side, there is a torch that, when lit, will make a trail of coins appear. Take the platform with the Inky Piranha Plant and on the end, near the gap, there will be a medal. A Warp Pipe will take Mario to the Goal Pole.

Star Medals

 * Star Medal 1: Behind the rotating wheel. Mario can grab the Medal after the first right turn.
 * Star Medal 2: Floating above one of the floating platforms past the second Ball 'n' Chain.
 * Star Medal 3: A little behind of the bridge with Ball 'n' Chains, there is a thin path with two Inky Piranha Plants. The Medal is just past the bridge, at the end of a small path.

Warp
At the area with the Koopa Troopas and ? Blocks, Mario can jump on one of the ? Blocks and do a Crouch Jump. If done correctly, he should go up the edge of the level. Then, Mario should continue to the right side, and jump over a gap. Doing so leads Mario beyond the Warp Pipe, and into a small room with a orange Warp Pipe. If Mario goes into the Warp Pipe, he will the warped to World 2.

The possible contents of this Mystery Box are:
 * Three Goombas. Defeating the Goombas causes 15 Coins and a Star Medal to appear.
 * A red Biddybud walking around a Fire Flower. Defeating the Biddybud causes 15 Coins and a Star Medal to appear.
 * A golden Mystery Box containing 15 Super Leaves, a P-Wing, and two Star Medals.
 * A golden Mystery Box containing the game's five supporting Toad characters and two Star Medals.

Layout
This level takes place in a valley with many waterfalls. Mario starts on a rock. In this rock, a pair of Binoculars can be used to see Toad above the right cliff (granting Mario a Star Medal). Ahead, in some wooden platforms there are two Piranha Plants and a Roulette Block. More platforms are found, each time lower, with Biddybuds, a Koopa Troopa and a Note Block. At one point, Mario will find a Mystery Box. Inside it, there is a purple room with three ? Blocks, two with a single coin and one with multiple coins. After Mario leave the Mystery Box, he will face with more Biddybuds and Para-Biddybuds. In the next area, Mario must ride a direction-change platform to cross a small cliff. In the other side, is positioned a Midway Flag, Venus Fire Trap and many trunks. Mario must go to the right, where a is found. Some clouds help Mario to traverse other cliff. Above them is a Red Ring. After, Mario jumps over a rock pillar. Jumping to a far below platform where Mario must ride another change-direction platform under some ? Blocks. The plumber must jump over Wooden Blocks until reach near the place where some Biddybuds and the Goal Pole are located.

Star Medals

 * Star Medal 1: The Medal lands on a ♪ Block after Mario uses the Binoculars to catch sight of Toad.
 * Star Medal 2: The second Star Medal is located in a Coin Heaven that can be accessed after Mario jumps on the.
 * Star Medal 3: Above one of the clouds to the right of the second Venus Fire Trap

Layout
A dock-like stage that is unlocked with three Star Medals, Mario starts on the land with a rail platform near. Mario must go up on this platform and move it ahead. In the way, there are a ? Block, Coins, Paragoombas, a water geyser and some Brick Blocks. The trail will end in a mountain with the Midway Flag. Another rail platform must be used briefly to reach in another, dodging fireballs from a Venus Fire Trap. The last platform will take Mario to a mountain with ? Blocks and a Mystery Box. Soon after there are some water geyses.The last two are for lauch the rail platform to far below rails, that will take Mario to a Warp Pipe. The Warp Pipe connects this area to the end of the level, where Mario can use one of these platforms to grab the top of the Goal Pole.

Star Medals

 * Star Medal 1: At the end of the top path after riding the green platform.
 * Star Medal 2: After the checkpoint, in a small inlet after the green platform drops down.
 * Star Medal 3: On a green platform after the Mystery Box near the gushing stream of water.

Layout
This is the first castle level of the game. In the first area, Mario must dodge two Draglets and cross a Firebar. A Podoboo and a lava geyser are on the lava, although they don't make much effect on the game play. In the next area, there is a spinning rock gear, with coins above it, a Podoboo and a Star Medal in the center. Ahead is another spinning stone gear with a Firebar in the middle. A platform with a Dry Bones and a rectangular ? Block with a Super Leaf is ahead. Near is a platform that rises from the lava, that can be used to reach on the top of a wall. Mario will land in a wire platform with a lava geyser and three Podoboos under it. At this point, Mario will find a corridor and a Hammer Bro.. Another wire platform (with another lava geyser under it) connect the corridor to the another area, where the Midway Flag and a Firebar are placed. Near is a castle wall with two Thwomps. After Mario leaves the place, a passage with another Dry Bones. Once in the far right, False Bowser will appear and Mario will notice Toad who is kept captive in a cell past the False Bowser. He starts to breathe several fireballs at Mario, while he is running through a path to the boss's bridge. When the hero arrives in the bridge, he must dodge the False Bowser attacks and press the button at the end. When the switch is pressed, the bridge breaks and the False Bowser is revealed to be a Tail Goomba. Once defeated, Mario rescues the kidnapped Toad. After, he can go to a warping block that will lead Mario to the top of a tower, where the Goal Pole and a Stopwatch is found.

Star Medals

 * Star Medal 1: In the middle of the first rotating platform, guarded by a Podoboo.
 * Star Medal 2: Near a Firebar.
 * Star Medal 3: In a narrow space behind the second Thwomp, accessible only by Wall Jumping or backflipping on the second Thwomp.

Enemies introduced

 * Ball 'n' Chains
 * Biddybud
 * Cheep Cheep
 * Draglets
 * Dry Bones
 * Firebars
 * Goombas
 * Goomba Towers
 * Grand Tail Goombas
 * Inky Piranha Plants
 * Koopa Troopas
 * Para-Biddybuds
 * Paragoombas
 * Piranha Plants
 * Podoboo
 * Tail Goombas
 * Thwomps
 * Venus Fire Traps
 * Boss: False Bowser