The Enderian Crucible
by Lemdu
The Enderian Crucible adds End-themed tools, armor and crafting materials for NeoForge, built around a new mineral called Cosmonium.
What it does
Cosmonium Ore is found in the End, and its shards can be refined into Cosmonium Alloy, which is the main material for the new gear. Cosmic String, a component that is only used for the Cosmonium Multi-Tool, rounds out the crafting chain. Shards, cores and alloy each sit at a different step of the progression, from raw find to finished equipment.
The mod is for players who push into the End and want gear that goes beyond Netherite in damage and durability. Installation needs only NeoForge, and it is published for 1.21.4 with a single file, 1.0.0. It runs on client and server, so the server and every player need it, and it is released under the MIT License without being open source.
Key features
Cosmonium tools
A pickaxe, axe, shovel, hoe and sword are crafted from Cosmonium, each tuned for its task, with higher efficiency and durability than Netherite equivalents.
Cosmonium Multi-Tool
A single item combines the pickaxe, axe and shovel functions, so one tool covers mining, chopping and digging.
Cosmonium armor
Full armor pieces give strong defense, toughness and knockback resistance for fights in the End.
Custom smithing templates
Dedicated smithing templates are added for upgrading gear made from the new material.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
End expeditions
Players who gather shards and refine alloy can equip Cosmonium gear before moving deeper into the outer islands.
Who it’s for: Players who want an End-game equipment progression on NeoForge 1.21.4, and server owners who want to add a higher tier above Netherite.
How it compares
Armored Up is a client and server mod for NeoForge and 1.21.4 under All rights reserved, so it is not open source, and it adds armor rather than a full tool and crafting chain. Fire and Flames is open source under the GNU General Public License v3.0 or later, is also client and server, but targets 1.21.1 rather than 1.21.4. Legendary Swords is client and server for 1.21.8 under All rights reserved, so it covers a different version and is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| The Enderian Crucible | NeoForge | 1.21.4 | Client and server | 2025-07-08 |
| Armored Up | NeoForge | 1.21.4 | Client and server | 2025-10-15 |
| Fire and Flames | NeoForge | 1.21.1 | Client and server | 2026-09-20 |
| Legendary Swords | NeoForge | 1.21.8 | Client and server | 2026-05-01 |
Questions
Does The Enderian Crucible need to be installed on the server?
Which loader and version does The Enderian Crucible use?
Where is Cosmonium found?
In the catalog
The Enderian Crucible is one of 17,631 Equipment mods on ModsFinder, and one of 7,420 Equipment mods for NeoForge. 17,979 mods support Minecraft 1.21.4.
Similar mods
What the author says
In the silent, shifting landscapes of The End, The Enderian Crucible invites you to embark on an ultimate, cosmic odyssey, pushing the very limits of what's possible within this alien dimension. At the heart of this mod lies Cosmonium, a material whispered about in ancient End texts, found only in the deepest, most…
Official listing
- Modrinth page
- modrinth.com/mod/the-enderian-crucible
- Owner
- Lemdu
- Published
- 2025-07-08
- Updated on Modrinth
- 2025-07-08
- Facts verified
- 2026-10-15