MC Calamity
MC Calamity is a data pack that brings the content of the Terraria-inspired Calamity Mod into Minecraft worlds, with new bosses, weapons and armor.
What it does
Installed as a data pack, MC Calamity adds four new bosses, more than 600 items, over 40 new mobs and five structures to a world. Its weapons are sorted into new classes (Magic, Ranger, Rogue and Summoner), and 70 new weapons and eight armor sets fall under them. A custom accessory system, new potion effects, music discs, paintings and a reworked fishing system round out the additions.
The data pack is required by Calamity Biomes, which depends on it to run. Required resource pack files must be installed alongside it, and the pack is placed in the world's data packs folder during world creation. Files are published for Fabric, Forge, NeoForge and Quilt, covering 1.20.2 – 1.21.4, and the mod is licensed under the Creative Commons Attribution 4.0 license, not as open source.
Key features
Four new bosses
Four bosses are added to the game, each with its own arena and drops for the new weapon classes.
Weapon classes and armor
Magic, Ranger, Rogue and Summoner weapon classes come with 70 new weapons and eight armor sets.
Custom accessory system
A dedicated accessory system lets players equip additional items that alter how they fight and explore.
Reworked fishing
The fishing system is rebuilt, with new catches and a different progression from the vanilla rod.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Required by 1 mod
Use cases
Calamity-style progression
Players who want a long progression of bosses and gear in a vanilla world can follow the new weapon classes from start to end game.
Server-hosted playthroughs
Server owners can add the pack to a world without requiring players to change their clients, since the client side is optional.
Who it’s for: Players who want Terraria-style bosses and gear in Minecraft, and server owners who run a world with the Calamity Biomes companion pack.
How it compares
Minecraft Calamity is a Forge and NeoForge mod for 1.19.4 – 1.20.6 that needs both client and server, under All rights reserved. Progressive Hearts is a Forge and NeoForge mod for 1.20.1 – 1.21.1 that also needs both sides, released as open source under the MIT License. Void's Titans is a data pack covering Fabric, Forge, NeoForge and Quilt for 1.21.8 – 1.21.11, required on the server with the client optional, and not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| MC Calamity | Fabric, Forge, NeoForge and Quilt | 1.20.2 – 1.21.4 | Server required, client optional | 2025-07-23 |
| Minecraft Calamity | Forge and NeoForge | 1.19.4 – 1.20.6 | Client and server | 2025-05-20 |
| Progressive Hearts | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-08-19 |
| Void's Titans | Fabric, Forge, NeoForge and Quilt | 1.21.8 – 1.21.11 | Server required, client optional | 2026-08-26 |
Questions
Which resource pack does MC Calamity require?
Does MC Calamity need to be installed on the client?
Can MC Calamity run with shaders?
In the catalog
MC Calamity is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 17,979 mods support Minecraft 1.21.4.
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What the author says
This ambitious datapack attempts to recreate the entire Terraria: Calamity Mod in Minecraft. Currently adds: - 4 New Bosses - 600+ Items - 40+ New Mobs - 5 New Structures - 8 New Armor Sets - New Weapon Classes! (Magic, Ranger, Rogue, Summoner) - 70 New Weapons - Custom Accessory System! - New Potion Effects - New…
Official listing
- Modrinth page
- modrinth.com/mod/mc-calamity
- Owner
- Scourge Nerds
- Published
- 2024-04-02
- Updated on Modrinth
- 2025-07-23
- Facts verified
- 2026-10-15