One-Way Wall

A One-Way Wall from Super Mario Maker

A One-Way Wall is an object found in Super Mario Maker, Super Mario Maker for Nintendo 3DS, and Super Mario Maker 2. Similar to the Flippers from the Yoshi's Island games, once Mario passes through the gate, he cannot go back through it from the other side. A One-Way Wall is the size of four regular blocks, and the arrow imprinted on it indicates the direction in which Mario can enter.

One-Way Walls can also be used in conjunction with Warp Pipes to recreate one-way pipes found in several Super Mario games. Additionally, when pointed upwards, One-Way Walls can be used similar to semi-solid platforms.

[Edit] Super Mario Maker / Super Mario Maker for Nintendo 3DS
Characters		Mario • Princess Peach • Toad • Bowser • Yoshi • Coursebot • Mary O. • Mr. Eraser • Parakeet • Soundfrog • Undodog • Yamamura • Baker
Game styles		Super Mario Bros. • Super Mario Bros. 3 • Super Mario World • New Super Mario Bros. U
Course styles		Ground • Underground • Underwater • Ghost House • Airship • Castle
Items and objects		? Block/Flying ? Block • 1-Up Mushroom • Arrow Sign/Checkpoint Flag^a • Axe • Big Mushroom^d (SMB) • Block/Rotating Block (SMW) • Bridge • Bumper^b • Buzzy Shell • Cape Feather (SMW) • Checkpoint Flag • Cloud Block • Coin/Pink Coin^c • Coin Block • Conveyor Belt • Donut Block • Fire Flower • Giant Gate (SMW) • Goal (SMB3) • Goal Pole (SMB & NSMBU) • Goomba's Shoe/Stiletto (SMB & SMB3) • Ground • Hard Block • Hidden Block • Ice Block • Koopa Clown Car/Junior Clown Car/Fire Koopa Clown Car/Fire Junior Clown Car^b • Lava Lift • Lakitu's Cloud • Lift/Flimsy Lift • Mushroom Platform • Mystery Mushroom/Costume Mario^d (SMB) • Note Block/Music Block • One-Way Wall • P Switch/Key^c • Pipe • POW Block • Propeller Mushroom (NSMBU) • Semisolid Platform • Spike Trap • Spiny Shell • Starting blocks • Super Leaf (SMB3) • Super Mushroom/Weird Mushroom (SMB) (separated in 3DS) • Super Star • Track • Vine • Trampoline • Warp Door/P Warp Door^b/Key Door^c • Wings • Yoshi's Egg (SMW & NSMBU)
Enemies		Bill Blaster/Bill Blaster (red) • Blooper/Blooper Nanny/Blooper Baby/Mega Blooper • Bob-omb/Mega Bob-omb • Boo/Boo Buddies/Stretch/Big Boo • Bowser/Bowser Jr. • Bullet Bill/Bull's-Eye Bill • Burner • Buzzy Beetle/Big Buzzy Beetle/Buzzy Beetle Tower/Para-Beetle/Heavy Para-Beetle • Cannon/Giant cannon • Cannonball/Giant cannonball • Chain Chomp/Big Chain Chomp/Unchained Chomp • Cheep Cheep/Blurp (SMW)/Deep Cheep (NSMBU)/Big Cheep Cheep/Big Deep Cheep • Dry Bones/Fish Bone/Big Dry Bones/Parabones • Fire Bar • Grinder • Goomba/Paragoomba/Galoomba/Flying Goomba/Big Goomba/Big Paragoomba/Big Galoomba/Goomba Tower/Shoe Goomba/Stiletto Goomba • Hammer Bro/Sledge Bro • Jelectro • Koopa Troopa/Big Koopa Troopa/Koopa Paratroopa/Big Koopa Paratroopa • Lakitu • Lava Bubble/Big Lava Bubble • Magikoopa/Big Magikoopa • Muncher • Piranha Plant/Big Piranha Plant/Fire Piranha Plant/Big Venus Fire Trap/Jumping Piranha Plant (SMW) • Rocky Wrench/Mega Rocky Wrench/Monty Mole/Mega Monty Mole • Sea Urchin • Spike Top/Spiky Parabuzzy • Spiny/Big Spiny/Spiny Egg • Thwomp/Big Thwomp/Skewer^c Unshelled Koopa • Wiggler/Big Wiggler
Moves		Crouch • Dash • Double Jump (NSMBU) • Drill Spin (NSMBU) • Flutter Jump (NSMBU) • Ground Pound (NSMBU) • Jump • Spin Jump (SMW & NSMBU) • Triple Jump (NSMBU) • Wall Jump (NSMBU)
Gnat Attack^d		Fly • Fly Bomb • Fly Child • Fly Parent • King Watinga
Other		Artbook • Course Maker • Fan-made courses highlighted by Nintendo • Gallery (artwork · screenshots · sprites and models) • Glitches • Media • Official courses^b^d • Pre-release and unused content (Nintendo 3DS) • Sound effects • Stamps • Staff (Nintendo 3DS) • Super Mario Challenge^e • Super Mario Maker Software Update!^d • Super Mario Maker: Crash Course
^a In version 1.20 or later ^b In version 1.30 or later ^c In version 1.40 or later ^d Only in the Wii U version ^e Only in the Nintendo 3DS version
Related Play Nintendo activities: Decorate your desktop • Red ahead • You’ve got this down cold

[Edit] Super Mario Maker 2
Characters	Playable characters	Mario • Luigi • Toad • Toadette
Characters	Supporting characters	Coursebot • Worldbot^b • Mr. Eraser • Nina • Princess Peach • Undodog • Yamamura • Partrick • Soundfrog • Toads • Yoshi/Red Yoshi
Course elements	Game styles	Super Mario Bros. • Super Mario Bros. 3 • Super Mario World • New Super Mario Bros. U • Super Mario 3D World
	Themes	Ground • Underground • Underwater • Ghost House • Airship • Castle • Desert • Snow • Forest • Sky
	Terrain	? Block • Brick Block/Rotating Block • Bridge • Clear Pipe • Cloud Block • Crystal Block • Donut Block • Frozen Coin^a • Ground • Hard Block • Hidden Block • Ice Block • Mushroom Platform • Note Block/Music Block • P Block^a • Warp Pipe • Rock Block • Semisolid Platform • Slope • Spike Block • Spike Trap
	Items	1-Up Mushroom/Rotten Mushroom • 10-Coin/30-Coin/50-Coin • Big Mushroom • Boomerang Flower^b • Bullet Bill Mask^b • Cannon Box^b • Coin • Cape Feather • Fire Flower • Frog Suit^b • Goomba Mask^b • Goomba's Shoe/Stiletto • Master Sword^a • Pink Coin • Power Balloon^b • Propeller Box^b • Propeller Mushroom • Red POW Box^b • SMB2 Mushroom^b • Super Acorn^b • Super Bell • Super Hammer • Super Leaf • Super Mushroom • Super Star • Superball Flower • Yoshi's Egg/Big Red Yoshi's Egg
	Enemies	Angry Sun/Moon • Ant Trooper/Big Ant Trooper • Blooper/Big Blooper/Blooper Nanny/Blooper Baby • Bob-omb/Mega Bob-omb/Parabomb • Boo/Big Boo/Boo Buddies/Stretch • Boom Boom • Bowser/Meowser • Bowser Jr. • Bully/Big Bully • Buzzy Beetle/Big Buzzy Beetle/Buzzy Beetle Tower/Para-Beetle/Heavy Para-Beetle/Buzzy Shell • Chain Chomp/Big Chain Chomp • Charvaargh • Cheep Cheep/Big Cheep Cheep/Blurp (SMW)/Deep Cheep/Big Deep Cheep • Dry Bones/Mega Dry Bones/Parabones/Dry Bones Shell • Fire Bro/Heavy Fire Bro • Fire Piranha Plant/Big Fire Piranha • Fish Bone • Goomba/Mega Goomba/Paragoomba/Big Paragoomba/Galoomba (SMW)/Big Galoomba (SMW)/Flying Goomba (SMW)/Para-Goomba (SMW)/ Goombrat/Kodeka Kakibō/Goombud (SMW)/Goomba Tower/Shoe Goomba/Stiletto Goomba • Hammer Bro/Sledge Bro • Hop-Chops • Horned Ant Trooper • Jelectro • Jumping Piranha Plant • Koopa Clown Car/Junior Clown Car/Fire Koopa Clown Car/Fire Junior Clown Car • Koopa Troopa/Big Koopa Troopa/Koopa Paratroopa/Big Koopa Paratroopa • Koopa Troopa Car • Koopalings^b (Larry · Morton · Wendy · Iggy · Roy · Lemmy · Ludwig) • Lakitu • Lava Bubble/Big Lava Bubble • Magikoopa/Big Magikoopa • Mechakoopa^b/Blasta Mechakoopa^b/Zappa Mechakoopa^b/Mega Mechakoopa^b • Monty Mole/Big Monty Mole • Muncher • Peepa • Piranha Creeper • Piranha Plant/Big Piranha Plant • Pokey^a/Snow Pokey^a • Pom Pom • Porcupuffer • Rocky Wrench/Mega Rocky Wrench • Skipsqueak • Spike^a/Mega Spike^a • Spike Ball^a/Giant Spiked Ball^a/Snowball^a • Spike Top/Spiky Parabuzzy • Spiny/Big Spiny/Spiny Shell • Spiny Egg • Spiny Skipsqueak • Stingby/Mega Stingby • Thwomp/Big Thwomp • Unshelled Koopa • Wiggler/Big Wiggler
	Gizmos	! Block • Arrow Sign • Banzai Bill • Bill Blaster/Bull's-Eye Blaster • Blinking Block • Bumper • Bull's-Eye Banzai/Cat Banzai Bill • Bull's-Eye Bill/Cat Bullet Bill • Bullet Bill • Burner • Cannon/Giant cannon • Cannonball/Giant cannonball • Conveyor Belt/ON/OFF Conveyor Belt • Checkpoint Flag • Crate • Dash Block^a • Fire Bar • Grinder • Icicle • Mushroom Trampoline/ON/OFF Trampoline^b • Key/Cursed Key^b • Lava Lift • Lift/Flimsy Lift/Cloud Lift • ON/OFF Switch/Dotted-Line Block • One-Way Wall • P Switch • POW Block • Red POW Block • Seesaw • Skewer • Snake Block • Swinging Claw • Track • Track Block • Trampoline • Tree • Twister • Vine • Warp Box/Warp Box (With Key) • Warp Door/P Warp Door/Key Door
	Miscellaneous	Starting blocks • Stone (Story Mode) • Toad (Story Mode) • Wings
Mario's moves		Charge jump^b (SMB) • Crawl (SM3DW) • Crouch • Crouch Jump (SM3DW) • Dash • Dive (SM3DW) • Double Jump (NSMBU) • Drill Spin (NSMBU & SM3DW^b) • Ground Pound (NSMBU & SM3DW) • Jump • Long Jump (SM3DW) • Midair Spin (NSMBU) • Roll (SM3DW) • Slide (all except SMB) • Spin Jump (SMW, NSMBU, & SM3DW) • Swim • Triple Jump (NSMBU) • Wall Jump (NSMBU & SM3DW)
Miscellaneous		Assist parts • Course Maker • Fan-made courses highlighted by Nintendo • Gallery • Glitches • Media • Mii outfits • Minigames^b (Catch & Win! • Match & Win! • Pop & Win!) • Ninji* • Peach's Castle • Phanto^b • Quotes • Sound effects • Staff • Yamamura's Dojo
^a In version 2.0 or later ^b In version 3.0 or later

One-Way Wall

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