Base ROMPokémon Emerald
Mariomon151 custom captures
DirectorAlpharad · Too Many Prods.
Pokémon × Mario · 2025 · Alpharad · Custom everything

Super MarioMon

Super MarioMon is the crossover that should not work as well as it does. Directed by YouTuber Alpharad and built by Too Many Productions, it takes Pokémon Emerald and replaces every single piece of it with the Mushroom Kingdom — 151 custom Mariomon, 8 Power Star challenges, a completely original Mario soundtrack, and a whole new world that has no Hoenn left in it whatsoever.

Every Pokémon is gone. Every gym is gone. In their place: Goombas, Koopas, Bowser, Princess Peach, Professor E. Gadd, the C.A.P. challenge, Warp Zones, and a game that somehow feels both deeply familiar and completely fresh at the same time. Released in April 2025, it became one of the most talked-about ROM hacks in years.

🍄 151 custom Mariomon
⭐ 8 Power Star challenges
🎵 Full custom Mario soundtrack
🌀 Warp Zone world navigation
💀 Built-in Nuzlocke mode
📈 Dynamic level scaling
🏆 The Pit battle gauntlet
✨ Custom UI, sprites, tilesets
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About Super MarioMon

The pitch for Super MarioMon is deceptively simple: what if every Pokémon was a Mario character? But in execution, it is something far more ambitious than a sprite-swap. Too Many Productions rebuilt Emerald's world from the ground up — new tilesets, new UI, new music, a new story, a new map structure, new battle mechanics — until what remained of Emerald was little more than the engine running underneath.

The world you explore is the Mushroom Kingdom, divided into themed worlds rather than routes. Instead of gyms, you collect Power Stars. Instead of a Pokédex, you have a Mariodex tracking your 151 captures. The creatures you encounter have entirely original typing, stats, abilities, and evolution lines — Goomba, Koopa, Boo, Lakitu, Chain Chomp, and 146 more, each designed from scratch to fit the Pokémon battle system in a way that feels genuinely intentional rather than slapped together.

The result — as players and Alpharad's own audience discovered when the hack released — is a game that is warmly charming and mechanically sound. The review that keeps appearing in community threads says it better than anything: "this romhack managed to rekindle my love for Pokémon."

🍄 Why this one is different Most crossover hacks are novelty items — fun for ten minutes, then you put them down. Super MarioMon has a full story, a competitive scene, postgame content, and a design philosophy that respects both franchises. It was built to be played through, not just looked at.

Main features

🍄 151 custom Mariomon — unique types, stats, abilities, moves, and evolution lines
⭐ 8 Power Stars replace gyms — collect them across the themed worlds of the Mushroom Kingdom
🎵 Fully custom Mario soundtrack — no Pokémon music anywhere in the game
🌀 Warp Zone navigation — worlds accessed Mario-style, not route by route
💀 Built-in Nuzlocke mode — toggle at new game start, no external tools needed
📈 Dynamic level scaling — challenge stays appropriate across any play order
🏆 The Pit — a postgame battle gauntlet with checkpoints and high-stakes streaks
✨ Custom sprites, UI, tilesets, and backgrounds throughout
♾️ No trading needed for evolutions — all evolution methods reworked
🔁 Dialog Skip — replay-friendly feature for returning players

The Mariomon: 151 Custom Captures

Every creature in Super MarioMon — referred to as a "capture," after the mechanic from Super Mario Odyssey — was designed from scratch. This is not a case of slapping a Goomba sprite onto Rattata's stat line. Each Mariomon has its own base stats, its own type combination, its own ability, and its own moveset built around what that character actually does in the Mario games.

The typing system has been completely rethought to serve the Mario roster. Characters from different games across the franchise — Super Mario Bros, Mario 64, Paper Mario, Mario Odyssey, and more — fill out the 151 slots with a diversity that maps surprisingly naturally to Pokémon's battle framework. Goombas are your early-route commons. Bowser is the legendary you work toward. And somewhere in between are characters with type combinations, abilities, and stat spreads that have spawned a fully active competitive community.

What makes the roster work

🐢 Familiar faces, new mechanics

Koopas, Boos, Piranha Plants, Chain Chomps — the characters you know are here, but their types and abilities are designed specifically for Pokémon-style battles rather than just their Mario roles.

⭐ Every fully evolved capture is balanced

The development team committed to rough stat parity across all fully evolved Mariomon — a design choice that keeps team building from having obvious dead weight and makes the competitive scene genuinely varied.

🎮 Multi-game representation

The roster pulls from Mario's full history — the classic platformers, Mario 64, Paper Mario, Odyssey, and more. If you have a favourite Mario game, chances are something from it is in the Mariodex.

🏆 A competitive scene

Super MarioMon has both VGC-style and Smogon-style competitive communities. Some Mariomon are tier-defining. One — Sonic — is the only capture banned outright from both competitive formats for being too powerful.

The Mushroom Kingdom — A New World Structure

Super MarioMon does not use Emerald's Hoenn map. The entire world was rebuilt as the Mushroom Kingdom, divided into themed worlds that you access through a Warp Zone — a central hub in the style of the world-select screens from classic Mario games. This is a fundamental structural change from how Pokémon normally works, and it shapes the entire feel of the adventure.

Instead of moving linearly from town to town along routes, you travel between distinct worlds, each with its own theme, encounters, and Power Star challenge at the end. Some worlds can be done in flexible order. The design is closer to a Mario game's level structure than a Pokémon region — which is exactly the point.

Story: Princess Peach's game

The narrative frame is deliberately light. Princess Peach and Professor E. Gadd are hosting the C.A.P. challenge — a kingdom-wide game where the first person to collect all 8 Power Stars gets a wish. You play as Mario, pursuing the stars. Bowser, naturally, has his own agenda. The story is not trying to be emotionally complex — it is warm, funny, and gives the world a reason to exist without getting in the way of the game. It works.

Modes, Features & QoL

Super MarioMon launched in April 2025 and has continued to receive updates that add features and fix issues. The current version includes a suite of modern conveniences that make it one of the best-equipped GBA ROM hacks to play in 2025.

Built-in Nuzlocke mode

Toggle Nuzlocke rules at the start of any new game. The open world structure of Super MarioMon makes Nuzlockes feel meaningfully different from linear Pokémon Nuzlockes — which world you tackle first changes which captures are available, and every loss carries real weight when your route order is a choice rather than a fixed sequence.

Dynamic level scaling

Level scaling adjusts enemy teams to stay appropriate to your progress. Combined with Level Caps, which prevent over-levelling, the difficulty curve is managed without requiring the player to grind or avoid encounters to stay competitive.

The Pit

The postgame battle gauntlet. A streak-based challenge with floors, checkpoints at every seventh floor to ease the frustration of losing late, and rotating rental captures starting from floor five. It is the postgame content for players who want a genuine test after the credits roll.

Quality of life

No trading evolutions. Dialog Skip for faster replays. Autosave after major events. A Sound Test item available postgame. Infinite Rare Candies for level management. All of these are in the current version of the hack — Super MarioMon is built to be played conveniently, not to recreate GBA-era friction for its own sake.

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Who should play Super MarioMon

  • Mario fans who have always wondered what it would look like if the Mushroom Kingdom ran on Pokémon's battle engine — this is that game, done properly.
  • Pokémon players who have exhausted the standard ROM hack recommendations and want something that feels genuinely different from the start.
  • Nuzlocke players — the Warp Zone world structure makes Nuzlocke runs feel meaningfully different from anything else in the ROM hack scene.
  • Players who care about competitive depth — the Mariodex has a real competitive scene with tier discussions, bans, and evolving metagame.
  • Anyone who enjoyed Alpharad's content or followed the Twitch playthrough — playing it yourself after watching it is a completely different experience.
  • Players who want a full, polished game with postgame content, not a novelty sprite-swap with nothing underneath.

Tips for new players

  • Check the Mariodex before building your team. Type combinations in Super MarioMon do not follow Pokémon logic — a character's type is based on their role and design, not their colour. Knowing your team's actual typing before you commit matters.
  • Use the Warp Zone early. Some worlds can be done in flexible order. Exploring which worlds are available early gives you access to a wider roster before committing to a team.
  • Respect the level scaling. Level Caps exist to keep the game from becoming trivial. Working within them rather than grinding around them produces the experience the game was designed to deliver.
  • Enable Nuzlocke mode before you start if you want it. Like most built-in challenge modes, it needs to be set at new game — it cannot be toggled mid-run.
  • The Pit has checkpoints. If you are going deep into the postgame gauntlet, note that checkpoints trigger every seventh floor. Plan your team's endurance around the checkpoint rhythm, not just individual battles.
After Super MarioMon: If you enjoyed the fresh, fully-converted world structure, try Pokemon Unbound for the most ambitious standard ROM hack or Pokemon R.O.W.E for open-world Hoenn with Nuzlocke support.
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Frequently asked questions

What is Super MarioMon?

Super MarioMon is a full Pokémon Emerald ROM hack directed by Alpharad and developed by Too Many Productions. It replaces every Pokémon with 151 custom Mariomon, swaps gyms for Power Stars across themed Mushroom Kingdom worlds, features a full custom Mario soundtrack, built-in Nuzlocke mode, dynamic level scaling, and a postgame gauntlet called The Pit. Released in April 2025.

Who made Super MarioMon?

Super MarioMon was developed by Too Many Productions (led by developer Kobazco) and directed and sponsored by YouTuber Alpharad. It was first streamed on Alpharad's Twitch channel before being released publicly in April 2025.

Is Super MarioMon based on FireRed or Emerald?

Emerald. Despite sometimes being grouped with FireRed hacks, Super MarioMon is a Pokémon Emerald ROM hack. The base ROM required is Pokémon Emerald (USA).

How many Mariomon are there?

There are 151 obtainable custom Mariomon — all custom-designed with original types, stats, movesets, abilities, and evolution lines based on characters from across the Mario franchise.

Does Super MarioMon have a Nuzlocke mode?

Yes. Built-in Nuzlocke rules can be toggled at the start of a new game without any external tools or modifications.

Can I play Super MarioMon on mobile?

Yes. RomHaven's browser emulator runs Super MarioMon on both mobile and desktop without any downloads required.

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More creative ROM hacks, Nuzlocke-friendly adventures, and games with something genuinely different to offer after Super MarioMon.

Super MarioMon 151 Mariomon · 8 Power Stars · Custom Mario soundtrack · Nuzlocke support · The Pit postgame.
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