Sometimes, the only thing wrong with a game is thatthere just isn’t enough of it. Popular titles that left gamers hungry for more levels and more complex challenges led to the proliferation of ROM hacks, where industrious individuals modify game elements like graphics, level design, and music to create something entirely new. These fan-made games are generally available for free online, giving those who’ve mastered the classics a chance to try a wealth of creative sequels.
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SNES favoriteSuper Mario Worldhas becomeone of the most popular titles for ROM hacking, which is no surprise since fanatical players have gotten so good at the original that they’ve managed to beat it blindfolded and without using their limbs. Though many of the most popular hacks are “Kaizo,” a Japanese word meaning “reorganize” that has come to signify extreme difficulty in the world ofMario, some of thebestSuper Mario WorldROM hacksare more casual playthroughs.
Updated June 07, 2025 by Erik Petrovich:The landscape of Super Mario World ROM hacks is as vast as it is game-changing. With a little bit of technical know-how and the right programs installed, altering the original Super Mario World is an easy process in 2021. Despite the release of the Mario Maker games, the ROM hacking community is as strong as ever, thanks to the capabilities of modding – the Ninji ROM hack, for example, alters Mario’s appearance while Yoshi’s Strange Quest lets theplayer take controlof Yoshi. ROM hacks vary wildly, from difficult Kaizos to innovative re-imaginings of other titles. Super Mario World Odyssey is one such game that shows off the near-limitless customizability of ROM hacks compared to in-engine level designers.

Installing Super Mario World ROM Hacks
While many ROM hacks can be played in a browser, installingSuper Mario WorldROM hacksisa relatively simple process, though it does have a few prerequisites to get one started. There are a few things one should have downloaded to get aMarioROM hackworking, and each serves its own purpose.
Once these elements have all been acquired, it’s as simple as using your ROM patcher to patch in your downloaded mod to theSuper Mario WorldROM. It’s important to make sure it’s a clean, fresh copy of the game, as multiple ROM hacks installed will typically crash the emulator.

11Super Mario World Odyssey
Super Mario World Odysseyis one of the most well-known and most ambitiousMario WorldROM hacksof the last decade. Not only does it bring much of the aesthetic of the Nintendo Switch title to SNES graphics, but it also brings the abilities Cappy gives Mario and other gameplay elements too.
It was unfortunately shut down by Nintendo a number of years back, but versions of the ROM hack are still available online. It is no longer being worked on by the original creator, but some derivative versions have been released by others even after development stopped. Theproject went a long wayin popularizingSuper Mario WorldROM hacks in recent years.

10Super Mario World: Return To Dinosaur Land
Employing the same basic structure as the original game, including the same bosses,Super Mario World: Return To Dinosaur Landproves that you don’t have to add new mechanics or drastically alter the graphics and music to make a great hack.
With 59 levels, including a water world and an ice world, this title is perfect for those who simply wishSuper Mario Worldwere longer. And thanks to its hidden bonus areas, it’s got replay value as players attempt to get 100%.

9New Super Mario World 1: The 12 Magic Orbs
Created by Brazilian Mario fan Rilla Roo,New Super Mario World 1: The 12 Magic Orbsfeatures great level design and an exhausting 112 exits. Employing a barrage of creative power-ups and items, Mario throws ice balls to turn Koopa Troopas into ice blocks, rides in a minecart, and dons the fan-favorite Tanooki suit.
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Though it starts out very similar toSMW, hold on, as the game gets more experimental as it goes along. It’s got quicksand, a boomerang suit, and all sorts of other additions you didn’t realize the original game was missing. Once you’ve played the Abstract World or blasted enemies from a spaceship, you’ll realize the possibilities for hacks are truly endless.
8Super Mario Legacy
One of the longest hacks out there,Super Mario Legacynonetheless shows a lot of restraint and is perfect for beginners due to its “normal” and “expert” difficulty settings. Creator Ragey has added enemies fromSuper Mario Bros. 2andSuper Mario Bros. 3into the mix, as well as some custom elements like Koopas that turn into bombs.
It’s tough, but the difficulty comes not from shell jumps or exploitation of the game’s mechanics, but rather from a consistently frustrating amount of well-placed enemies.

7Yoshi’s Strange Quest
The originalSuper Mario Worldwas finally followed up in 1995 withSuper Mario World 2: Yoshi’s Island. While a fun game in its own right, many fans weredisappointed in the sequelbecause of how different it was. As one of thebestSMWROM hacks, there are 71 levels ofYoshi’s Strange Questto bridge that gap a bit, taking mechanics like egg-throwing and ground pounds and putting them into a game similar toSuper Mario Worldwith Yoshi at its center.
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As it attempts to combine the best elements of both games (as well as borrowing from non-Mario titles likeDonkey Kong Country), this is a fun and creative hack with bright, colorful graphics, perfect for those who enjoyedYoshi’s Islandbut got tired of chasing after Baby Mario all the time.
6Mario Is Missing! Done Right
One of the least celebrated Mario spinoffs was 1992’sMario Is Missing!, an educational game that didn’t use Luigi to his full potential. Thankfully, creator Gamma V stepped in and made a full-length hack that lets Luigi shine.
The graphics are closer toSuper Mario All-Stars, and not every feature ofSMWis there, but it includesinnovative boss fightsand takes things a step further than standard hacks that stick too closely to their source material. The result is a truly original game that stands on its own.

5Ninji Story
If you’re bored by easier fan-made games but aren’t quite ready to move on to the world of kaizo, considerNinji Story. Released in 2021, it lets players control one of themost unsung characters in Mario lore, a Ninji, and is designed for intermediate skill levels.
This is a bite-sized game full of bite-sized levels, and though difficult, it helps players learn the mechanics necessary to perform the types of precision jumps utilized in more advanced hacks. Anyone who’s taken on Super Expert levels fromSuper Mario Maker 2could start here to master the mechanics before moving onto the really challenging stuff.

4Super Mario World: The Secret Of The 7 Golden Statues
With graphics that look just like the original and fun, complex levels, at first glanceSuper Mario World: The Secret Of The 7 Golden Statuescould be mistaken for a legitimate sequel. Though the boss battles are tough, it isn’t too hard and includes custom mechanics like ground pounds and wall jumps.
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Though not compatible with every emulator, this is one fans should seek out, as elements like flying wigglers and bullet cannons that come out of warp pipesare welcome additions, and the story is properly thought-out. Keep an eye out for the snow world reminiscent ofYoshi’s Islandand the boss battle featuring the angry sun.
3SMW 2+3: The Essence Star
A quick game with only 45 exits,SMW 2+3: The Essence Starfeatures elements like creative On/Off switches that will prepare players for the types of custom things they’ll see in more advanced hacks. The game also contains shops where you can use your coins to buy items that will change previous levels, adding an RPG flair to the adventure.
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There isn’t an overwhelming amount of enemies, making this title ideal for those whose favorite part of gaming is uncovering hidden exits and secrets. There’s even a spot where Mario picks up his trusty hammer fromDonkey Kongand wields it just like in his old arcade days.
2Learn 2 Kaizo
If you’ve spent hours watching popular streamers take on insane hacks likeGrand Poo World 2orInvictusand wondered how on Earth they got so good, a great place to start isLearn 2 Kaizo. Designed as a kaizo training system, it teaches one advanced trick per level to lay the groundwork necessary to take on really tough games.
If you’ve ever wanted to learn how to do a spring jump or double shell jump, or even what those things are, you’ll understand fullyafter struggling through this one.