ReniDrags Molten Mayhem!
by ReniDrag
Molten Mayhem, a NeoForge mod by ReniDrag, adds a fiery biome, a molten dimension and a furnace boss to the world.
What it does
A molten biome generates naturally in the overworld, and ruined portals lead into a molten dimension beneath the surface. Players light the portal with a lighter. Inside, the mod adds new trees, structures and mobs, along with underground molten dungeons that hold loot and the heart of a boss called the Furnace King.
The dungeon heart is used to summon the Furnace King, whose molten minions fight alongside him. The mod also includes new tools, among them three drills and a TNTickaxe, and a reward called Pandora's Furnace. Being a NeoForge mod, it installs on NeoForge alone.
Installation covers the server and each player's game. Files are published for NeoForge across five game versions, 1.21.1 – 1.21.5, and the latest file, 1.0.0, targets 1.21.5 and was published on 2025-05-20. The code is not open source and is released under All rights reserved.
Key features
Molten biome
A fiery biome generates in the overworld, with terrain and mobs that differ from the surrounding areas.
Molten dimension
Ruined portals lead to a dimension below the surface, reached after the portal is lit with a lighter.
Furnace King boss
A boss summoned from a heart found in molten dungeons, supported by molten minions in the fight.
New drills and tools
Three new drills and a TNTickaxe are added alongside other tools for mining the molten content.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Boss battles
Players gather loot in molten dungeons, then summon the Furnace King once they have the heart.
Who it’s for: Players who want new biomes, dimensions and boss fights on NeoForge, on single-player or multiplayer servers where the mod is installed on both sides.
How it compares
Hazelia is also a NeoForge mod under All rights reserved and not open source, but its files cover 1.21.1 – 1.21.10. Cabela Mayhem is open source under the MIT License and targets NeoForge for 1.21 – 1.21.1, a range that does not overlap with Molten Mayhem's 1.21.1 – 1.21.5.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| ReniDrags Molten Mayhem! | NeoForge | 1.21.1 – 1.21.5 | Client and server | 2025-05-20 |
| Hazelia | NeoForge | 1.21.1 – 1.21.10 | Client and server | 2025-12-02 |
| Cabela Mayhem | NeoForge | 1.21 – 1.21.1 | Client and server | 2025-03-24 |
Questions
Does Molten Mayhem need to be installed on the server?
Which game versions does Molten Mayhem support?
Is the Furnace King boss optional?
In the catalog
ReniDrags Molten Mayhem! is one of 11,058 Mobs mods on ModsFinder, and one of 4,974 Mobs mods for NeoForge. 15,307 mods support Minecraft 1.21.5.
Similar mods
What the author says
Welcome to Renidrags Molten Mayhem – a fiery new frontier packed with danger, loot, and super awesome challenges!!1! Before the really awesome description here are some of the gameplay features! Find the naturally spawning new biome the molten biome! Where you can find these new ruined portals! Use the lighter to…
Official listing
- Modrinth page
- modrinth.com/mod/renidrags-molten-mayhem
- Owner
- ReniDrag
- Published
- 2025-05-20
- Updated on Modrinth
- 2025-05-20
- Facts verified
- 2026-10-15