Hellish structures
by DuoCraft
Hellish structures adds a fortress, a blaze tower and spawner rooms to the Nether, placed by world generation so players find them while exploring.
What it does
The mod places several large structures in the Nether. The Massive Nether Castle is a sprawling fortress with treasure and hazards, and the Blaze Tower is a fiery tower ruled by Blazes that offers high rewards. Two unique structures are included now, and more are planned for later updates.
Each structure has its own loot table, balanced to give rare and valuable rewards. Mob spawners are scattered through the structures, and the structures are made to be uncommon so finding one feels like a discovery. The mod is a server-side addition, so only the server needs it and players can join without installing it. Files are published for Fabric, Forge, NeoForge and Quilt for 1.21 – 1.21.4, and the code is not open source; it is released under All rights reserved.
Key features
Nether castle
A large fortress in the Nether holds treasure, but also traps and mobs that guard it.
Blaze tower
A fiery tower held by Blazes, with rewards for players who fight their way to the top.
Custom loot tables
Each structure uses its own loot table, so the rewards differ from one structure to the next.
Spawner challenges
Mob spawners placed throughout the structures make moving around them both thrilling and risky.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Nether exploration
Players who explore the Nether find rare structures to test their combat skills against.
Who it’s for: Server owners who want more to find in the Nether, and players who enjoy hunting for uncommon structures and their loot.
How it compares
Hellish Trials is a Fabric and NeoForge mod for 1.21 – 1.21.2, also under All rights reserved and not open source. Tom's Structures covers all four loaders for 1.21 – 1.21.11 under the MIT License, with client and server as its environment. Structures Plus is a NeoForge-only mod for 1.21.1, with client and server as its environment and All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Hellish structures | Fabric, Forge, NeoForge and Quilt | 1.21 – 1.21.4 | Server required, client optional | 2025-01-25 |
| Hellish Trials | Fabric and NeoForge | 1.21 – 1.21.2 | Not published | 2026-01-11 |
| Tom's Structures | Fabric, Forge, NeoForge and Quilt | 1.21 – 1.21.11 | Client and server | 2026-08-09 |
| Structures Plus | NeoForge | 1.21.1 | Client and server | 2025-12-01 |
Questions
Which loaders have files for Hellish structures?
Does the mod include more structures later?
In the catalog
Hellish structures is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 17,979 mods support Minecraft 1.21.4.
More from DuoCraft
Similar mods
What the author says
Hellish Structures is a Minecraft datapack that enhances your Nether exploration experience by adding rare and challenging structures to discover. Prepare for adventure and test your skills against the dangers of the Nether!
Official listing
- Modrinth page
- modrinth.com/mod/hellish-structures
- Owner
- DuoCraft
- Published
- 2025-01-23
- Updated on Modrinth
- 2025-01-25
- Facts verified
- 2026-10-15