The pixelated sky of the Mushroom Kingdom didn’t just turn gray; it fractured.
Leo, a lifelong Mario devotee, sat in his room surrounded by vintage cartridges and limited-edition figurines. He was currently deep into a community-made ROM hack titled Super Mario: The Infinite Glitch. But as he reached the final flagpole, his monitor didn't show a "Thank You" message. Instead, the screen rippled like water, and a gloved hand reached out from the glass, pulling Leo into the code.
He tumbled onto a platform made of logic gates and neon lines. This wasn't just one game; it was the Mario Multiverse Hub.
Standing before him were dozens of Marios, each from a different fan-made reality. There was Paper-Craft Mario, whose world looked like a pop-up book; Steampunk Mario, sporting brass goggles and a steam-powered jetpack; and 8-Bit Nightmare, a flickering shadow of the 1985 original.
"The Source Code is collapsing," a gritty, cel-shaded Mario whispered, adjusting a scarf. "A virus is erasing the fan-made worlds. We’re the only ones left who remember the secrets."
Leo realized his years of playing fan-made levels weren't just a hobby—they were a manual. He knew the hidden "Kaizo" jumps that logic shouldn't allow. He knew the triple-frame wall-kicks and the secret vine-spawns that Nintendo never intended.
Leading the "Super Fanmade Bros," Leo guided them through a gauntlet of corrupted levels. When a massive, glitching Bowser made of dead pixels blocked their path, Leo didn't look for a bridge or an axe. He spotted a series of invisible blocks—a trick he'd seen in a 2012 fan-level. "Trust the glitch!" Leo shouted.
With a coordinated leap, the Multiverse Bros performed a "shell-jump" chain, bouncing off each other’s heads to reach a height the virus couldn't track. They reached the core, and Leo used his knowledge of the game's internal variables to reset the world's gravity, sending the virus spiraling into the "Minus World" abyss.
The fractures healed. The neon lines turned back into green hills and blue skies.
As Leo felt the pull of his own world, the Steampunk Mario tipped his cap. "You’re more than a fan, kid. You’re the Architect."
Leo woke up at his desk. The screen was black, except for one line of text in the corner: New Level Unlocked: The Legend of Leo.
Mario Multiverse: The Ultimate "Super Fanmade Mario Bros" Experience
Mario Multiverse (often abbreviated as SFMB or Super Fanmade Mario Bros) is an ambitious fan-developed platform that expands the concept of level creation far beyond the limits of official titles. Originally conceived by a developer named Neoarc as a personal hobby to recreate Super Mario Bros. 1, it has evolved into a massive project featuring hundreds of themes and dozens of distinct gameplay styles. A New Standard for Level Creation
While often compared to Super Mario Maker, the developers explicitly distance themselves from being just a "PC clone". Mario Multiverse offers a depth of customization that includes:
Vast Game Styles: It covers a wider range of history than official games, including elements from Super Mario Bros. 2, Super Mario Land, Super Mario Land 2, and even unique retro 8-bit interpretations of Super Mario Odyssey.
Custom Content: Players can design their own pixel art for enemies and bosses directly within the game or import sprite sheets.
Advanced Editor Features: The level editor supports unique mechanics like custom level endings, NPC dialogue for storytelling, and sub-levels with entirely different visual themes.
Diverse Power-Ups: Unlike official games where certain power-ups are locked to specific styles, this project allows a massive array of items to be used across any chosen game style. Key Features and Gameplay
The "Multiverse" in its name reflects the sheer variety of content available to players: mario multiverse super fanmade mario bros
Playable Characters: The game features multiple playable characters, including Mario, Luigi, Blue Toad (with his signature lower jump from SMB2), and others.
Unique Mechanics: Beyond standard platforming, levels can include "super jumps" to reach liquid platforms, mini-maps for navigation, and unique quest objectives like collecting pink coins in city themes.
Community Integration: The project includes a "Stage World" where users can play, search for, and comment on levels created by the community, provided they have an internet connection. Project Status and Availability
Mario Multiverse has spent several years in an "indefinite closed beta," gaining a reputation for its exclusivity. However, as of April 10, 2025, a first public demo (sometimes referred to as Mario Singleverse) was released to allow the general public to experience its tools and built-in stages.
Because it is a non-commercial fan project using Nintendo’s copyrighted assets, the developer maintains it out of pocket and does not monetize the game to avoid legal complications. This Super Mario Fan Game is INSANE!
Mario Multiverse—originally known as Super Fanmade Mario Bros. (SFMB)—is an ambitious fan-created project designed to be the ultimate Super Mario level creation tool for PC. Developed by neoarc, it often draws comparisons to Nintendo’s Super Mario Maker series but distinguishes itself by offering a significantly deeper and more customizable experience. Beyond Mario Maker: Key Features
While Super Mario Maker focuses on accessibility, Mario Multiverse is built for power users and creators seeking total control.
Expansive Game Styles: The project includes assets and physics from a massive range of titles, including Super Mario Bros. (1, 2, and 3), Super Mario World, Super Mario Land 1 & 2, and the New Super Mario Bros. series.
Theme Customization: Unlike the fixed themes in official games, this engine features a "Theme Maker" that allows users to create and import their own custom visual styles.
Deep NPC & Story Tools: Creators can add NPCs to tell stories, customize level endings, and utilize sub-levels with entirely different themes within a single stage.
Custom Enemies & Power-ups: Users can design their own pixel art for enemies and define unique behaviors, like a 2D version of a Wamp or custom enemies from other franchises like Sonic the Hedgehog. Development and Access
The project spent years in a highly restricted closed beta phase, gaining a reputation as a "perpetual beta" accessible only to a small circle of invited testers. However, development milestones have recently opened the door for the wider community:
Public Release: The first public demo was released on April 10, 2025.
Mario Singleverse: A specific version known as the Mario Multiverse public demo (or "Singleverse") allows players to explore demo stages and test the theme editor.
Internet Requirement: Most versions of the game require an active internet connection to function, as levels are hosted on a central server for sharing and ranking. Gameplay Modes
In addition to the editor, the game features various ways to play: YouTube·Blue Television Gameshttps://www.youtube.com
The glow of the old CRT monitor was the only light in Leo’s room, illuminating a face etched with focused determination. On the screen, the familiar title screen didn't say Super Mario Bros. It read, in bright, shimmering pixels: MARIO MULTIVERSE.
This wasn’t an official Nintendo release. It was the legendary "Super Fanmade Mario Bros." project—a community-driven romp built by fans, for fans, a chaotic love letter to the plumber that defied copyright logic and game design restrictions. The pixelated sky of the Mushroom Kingdom didn’t
Leo hit 'Enter'.
Instantly, the game exploded. This wasn't the World 1-1 he knew. The pixel art style shifted fluidly between 8-bit, 16-bit, and high-definition hand-drawn sprites within seconds. This was the Hub, a fractured dimension where every Mario game ever made—and many that hadn't—collided.
Leo navigated his avatar, a pixelated Mario wearing a Builder’s Helmet (a nod to Mario Maker), toward a rift in the fabric of the reality. This was a "Versus Level." He wasn't playing against AI; he was racing against a ghost data of a player named 'WarioWarrior99.'
The level loaded: "Auto-Mario Mayhem: Toxic Turbulence."
The music kicked in—a heavy metal remix of the Underground Theme. The screen began to scroll automatically. Leo didn't even have to press forward; he just had to survive.
Immediately, the fanmade nature of the game reared its head. The ground was made of "Note Blocks" that launched him into the air. Mid-flight, he grabbed a leaf, transforming into Raccoon Mario, but the sprite glitched—he suddenly looked like the NES version of Tanooki Mario but with the flight mechanics of the SNES Cape Feather.
"Classic fanmade jank," Leo muttered with a grin, fighting the physics engine.
The level shifted abruptly. He fell through a pipe and landed in a section that looked like Super Mario 64, complete with the blocky polygons of 1996. But the enemies were Super Mario World Koopas. Leo had to ground-pound a switch while dodging spinning firebars that moved impossibly fast.
Error: Entity Overflow, the text log in the corner flickered.
The game was struggling to render the chaos. This was the beauty of Mario Multiverse. It was held together by duct tape and passion.
Suddenly, the level design turned malicious. "Kaizo blocks"—invisible coin blocks placed deliberately to stop a player's jump—appeared out of nowhere. Leo slammed into one, his momentum killed instantly. He plummeted toward a pit of instant-death spikes.
"No way," Leo hissed.
Time seemed to slow. He rapidly tapped the 'Spin Jump' button. In this fanmade engine, the Spin Jump had a property Nintendo never intended: it allowed you to bounce off of spike tops if you had a specific power-up equipped. Leo prayed he had the correct flag set.
Boing!
Instead of dying, Mario ricocheted off the spikes, screaming a digitized voice clip that was distorted from overuse. He launched himself upward, catching the edge of a ledge.
The finish line was in sight—a goal tape that looked like a pixelated version of Rosalina.
But WarioWarrior99’s ghost was ahead. The transparent blue figure taunted Leo, performing a "P-Speed" run to clear the final gap.
Leo saw only one option. He grabbed a fanmade item, the "Rainbow Star," tucked away in a hidden block he had memorized. It wasn't invincibility; it was a "Palette Swap" power-up. Clear player objective and visual read of the goal
He touched it. The world inverted. Black became white; fire became ice. The collision data for the level briefly reset.
With the level's geometry confused, Leo ran through a wall that should have been solid, cutting a diagonal corner that shaved off half a second.
The music swelled—the metal remix hitting a crescendo.
Leo and the ghost hit the goal tape at the exact same millisecond.
TIE GAME.
The screen faded to black. Instead of a score tally, a chat box appeared in the corner of the screen, typed by another human somewhere else in the world.
: dude that wall clip : reportd bug or feature? : feature. devs left it in the v0.4 patch. : gg. remtach?
Leo smiled. This wasn't the polished, corporate experience of a mainline Nintendo game. The physics were floaty, the sprites clashed, and the difficulty was sadistic. But Mario Multiverse was alive. It was a world where the impossible happened daily, built by people who loved the plumber enough to break him.
He cracked his knuckles.
"Rematch accepted," Leo typed. "Let's play."
Mario Multiverse , originally titled Super Fanmade Mario Bros. (SFMB), is a fan-developed Super Mario level creation platform developed by neoarc. Often described as an expansive alternative to Super Mario Maker, it features tools to recreate or invent stages across dozens of classic and unique game styles. Core Game Features
Extensive Themes: Includes styles from Super Mario Bros. (1, 2, 3), World, Land, Land 2, Special, Odyssey (8-bit), and even non-Mario themes like Sonic.
Deep Level Editor: Features a robust maker mode where you can drag and drop blocks, items, and enemies. It supports sub-areas via pipes, linked doors, and custom NPCs to tell stories.
Customization: Advanced users can create their own game themes, pixel art, and cutscenes.
Playable Characters: Supports multiple characters beyond Mario, each with unique mechanics.
Most games with this title are custom PC fan-games that allow players to play through levels inspired by different eras of Mario (NES, SNES, NSMB Wii, etc.) combined into one package. It is often associated with the SMBX (Super Mario Bros. X) engine.
The Multiverse Team plans to add a “Classic Marathon” mode (remaking SMB1 levels with multiverse twists) and a secret world themed around EarthBound by late 2026. They’ve also teased a potential console port via homebrew — though they stress that’s a long shot.
Disclaimer: Mario Multiverse Super Fanmade Mario Bros. is a fan project not affiliated with or endorsed by Nintendo. All original characters and properties belong to their respective owners.
Despite the legal risks, the community around this fan game is vibrant. On Twitch, speedruns of the "All-Dimensions% category" last over four hours, requiring mastery of over twelve distinct physics engines. The world record changes weekly.
Dedicated forums host "Multiverse Jams," monthly competitions where level designers fuse three random dimensions (e.g., Super Mario Land + Super Mario Sunshine + the underground theme from SMB2). The results are often avant-garde, sometimes broken, but always creative.