MC Calamity
ModA datapack that attempts to recreate the Terraria: Calamity Mod.
Why gradeE
How grades workStrengths
Points lost
- No release in 15 months−20 points
- Many modpacks removed it−10 points
- No source code link−7 points
- Releases in only 4 of the last 24 months−3 points
- Under 5 million downloads−1 point
All 11 criteria
Maintenance
15 points lost12 / 27Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.15 months ago (23 Jul 2025) 0 / 12Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.21.4 on Fabric, Forge, NeoForge and Quilt. 16% of the 718 popular Fabric mods updated in the last 6 months also have files for 1.21.4. Latest Minecraft: 26.3. 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 4 of the last 24 months 3 / 6Stability
10 points lost12 / 22Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.3 of the 5 modpacks with two or more versions removed it in a later one (60%) See the 3 modpacks0 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.No quick fix in 2 years 7 / 7Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5Transparency
7 points lost3 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.No link on the project page 0 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · Scourge-Nerds/calamitywiki 3 / 3Popularity
1 point lost3 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.49,781 3 / 4Track record
8 points lost0 / 8AgeHow long the project has existed. It counts less when no new file came out recently.2.5 years, 17 releases 0 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in both latest files for recent Minecraft versions. See Security
29.8 of the 71 points that apply = 42 out of 100. The points above are rounded to whole numbers.
Images
About
MC Calamity is a Minecraft datapack that brings content and gameplay inspired by Terraria: Calamity into the game. It adds hundreds of items, new weapon classes for magic, ranged, rogue, and summoner play, eight armor sets, and more than 40 new mobs, including Wulfrum drones and hovercrafts, colored slimes, and Sunken Sea creatures such as the Giant Clam. Boss encounters include the Eye of Cthulhu, King Slime, Desert Scourge, and Yharon, while world events include Slime Rain and Blood Moon. The optional biome datapack adds the Underground Desert, with antlions, tomb crawlers, cabins, and shrines, and the Sunken Sea, a watery cave biome with corals and its own mobs; the main content also includes structures such as Floating Islands, Living Trees, and Desert Shrines. Custom crafting stations provide their own recipe menus, the Tinker's Workshop lets players attach accessories to gear, and the fishing system adds fish, crates, bait, and fishing-related potions. The combat and exploration additions also include a stealth system with maximum stealth, regeneration, and cost attributes, alongside summon staffs that can dismiss their summons.
Written from Modrinth . How we write it
In-game changes
Does not change the game's code directly.
Adds 9 structures, 2 enchantments, 7 paintings, 2 recipes, 65 advancements, 990 loot tables and 32 sounds.
Counted from the names and data files in the mod, so the list may not be complete.
Replaces 68 of vanilla Minecraft's loot tables, 4 models, 1 mob and entity texture and 1 core shader.
Details
- Creator
- Scourge Nerds
- License
- Creative Commons Attribution 4.0 International
- Downloads
- 50K
- Created
- 21 Apr 2024
- Official page
- Modrinth
Security
No harmful code found
We checked its files and read their code, without running it.
Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.
How we checked
- FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.5 latest files: the newest file for each Minecraft version and loader. The answer above is about the 2 for recent versions. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
- Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.Read without running it
- Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.Nothing declared about your system outside the game.
- Looked for, not foundWe looked for these in the file and did not find them.The internet, folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.
Privacy
We found nothing it sends
We read its code without running it: it contacts no web address while you play.
Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.
How we checked
- Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.The code of both files, for recent Minecraft versions. See each file in Releases
- Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.Nothing declared about crash reports, usage data or advertisements.
AI
No sign so far that AI was used to make it
We looked for AI tools in its texts, files, images and sounds and found none.
We have not read its code history yet.
No sign of AI in the game
We found no AI service, AI library or AI model file in its code.
Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.
How we checked
- Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.No AI content or AI features declared.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Not read yet
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found17 changelogs read
- Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.Nothing found
- Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.Nothing found1,237 images read
- Sounds in its filesThe tags of the sound files in the files you download, where some AI music tools write their name.Nothing found39 sounds read
- Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.No AI service, AI library or AI model file
Compatibility
See all 17 filesPoint at or tap a version to see its loaders.
Related projects
Projects that need MC Calamity to work.
Modpacks using this project
Find modpacks with itModpacks that include MC Calamity in at least one of their versions, most downloaded first.
TerraCraft: Confluence + Calamity16K downloadslast version with it 7 Jan 2026
Mythos: Terraria + Calamity6.5K downloadslast version with it 14 Apr 2026
RPG! Simply [Fabric]2.2K downloadslast version with it 11 Jan 2026
NeosSurvivalPlus1.3K downloadslast version with it 6 May 2024
Downside: Ice Edition446 downloadslast version with it 28 Mar 2025Latest files
The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.