mrmc
by FT-DLYL
mrmc is a Forge and NeoForge adventure mod that adds Steel, Aether Cores and a set of Special Apples to the game.
What it does
Steel is the first new material: a furnace smelts iron into steel ingots, which craft swords, pickaxes, axes, shovels, hoes, shears and a full armor set. Steel gear sits a little above iron in strength and well below diamond. Smelting the first steel grants the Forged Fire advancement, and collecting the full steel armor set grants another one.
Aether Cores are crafted from items such as the Earth Core, Monsters Core, Soul Core and Rebirth Core. They are used to craft Special Apples, which the mod describes as strong enough to make battles noticeably easier. The mod also adds more mobs and challenges, along with new items and dangers. Wonder Worlds is included as a separate progression path that keeps the classic experience while adding more strategic choices.
The server and every player need the mod installed. Files are published for Forge and NeoForge, under All rights reserved, and the mod is not open source. Forge has a file for 1.20.1, and NeoForge has one for 26.1.2 on the alpha channel.
Key features
Steel materials
Iron becomes steel in a furnace, and steel is used for tools and a full armor set with a helmet, chestplate, leggings and boots.
Aether Cores
Craftable cores, including the Earth, Monsters, Soul and Rebirth cores, serve as ingredients for other items.
Special Apples
Apples made from cores give strong effects that the author describes as making fights significantly easier.
More mobs and challenges
New mobs and challenges add dangers to discover alongside the new items and wealth in the world.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Adventure playthroughs
Players who want new equipment and a longer progression path can add steel tools and cores to a survival world.
Who it’s for: Players and server owners who want new materials, consumables and mobs on top of vanilla progression, with the mod installed on both sides.
How it compares
Alloys is a Forge and NeoForge mod for 1.20.1 – 26.1.2, also client and server, but it is all rights reserved and not open source. deep steel is a Forge mod for 1.20.1 only, released under the MIT License, so its code can be reused under those terms. Fire & Steel and Steel are also steel-focused options, but they cover different loaders and versions, and Steel is NeoForge-only for 1.21.4 – 1.21.5.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| mrmc | Forge and NeoForge | 1.20.1 – 26.1.2 | Client and server | 2026-08-06 |
| Alloys | Forge and NeoForge | 1.20.1 – 26.1.2 | Client and server | 2026-08-25 |
| deep steel | Forge | 1.20.1 | Client and server | 2025-10-12 |
| Fire & Steel | Forge | 1.20.1 | Client and server | 2024-06-14 |
| Steel | NeoForge | 1.21.4 – 1.21.5 | Client and server | 2025-05-02 |
Questions
Does mrmc need to be installed on the server?
Which loaders does mrmc support?
Which game versions have files?
In the catalog
mrmc is one of 19,031 Adventure mods on ModsFinder, and one of 10,478 Adventure mods for Forge. 15,189 mods support Minecraft 26.1.2.
Similar mods
What the author says
World Hearts (Aether Cores) adds brand-new materials, powerful consumables, and unique mechanics to Minecraft! Expanded Material System: Smelt Iron Ingots in a furnace to obtain Steel! Craft Steel Swords, Steel Pickaxes, Steel Axes, Steel Shovels, Steel Hoes, Steel Shears, and a full set of Steel Armor (Steel Helmet…
Official listing
- Modrinth page
- modrinth.com/mod/mrmc
- Owner
- FT-DLYL
- Published
- 2026-07-28
- Updated on Modrinth
- 2026-08-06
- Facts verified
- 2026-10-15