Copper Age Backport
ModMake copper more useful with this simple backport mod (Fabric 1.21.1)
Why no grade
How grades workFinished or replaced projects get no grade: they will not get fixes or new versions.
- Archived on Modrinth.
- The project page: Note: The mod has been discontinued and Instead I recommend migrating to The Copper Age Backport by Smallinger, the transition should be seamless as both mods used the minecraft: namespace.
All 11 criteria
Maintenance
Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.12 months ago (27 Oct 2025)Supports 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.1.21.1 on Fabric and Quilt. 15% or more of the popular mods updated in the last 6 months also have files for 1.21.1. Latest Minecraft: 26.3.Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 1 of the last 24 monthsStability
Removed 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.1 of the 2 modpacks with two or more versions removed it in a later one (50%)Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.Known 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.1 known conflict, but it does not count in the grade See the known conflictTransparency
Source codeWhether the project page links to its source code, so anyone can read what it does.No link on the project pagePlace to report problemsWhether the project page links to a place where players can report problems: an issue tracker.No link to report problemsPopularity
DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.2,535Track record
AgeHow long the project has existed. It counts less when no new file came out recently.13 months, 3 releasesSecurity
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in the latest file for recent Minecraft versions. See Security
In-game changes
Changes the game's code in 2 areas: Mobs and their behaviorChanges 1 game code file in this area: mobs, animals, villagers, projectiles and how they move and act. and Blocks and fluidsChanges 1 game code file in this area: how blocks, fluids and redstone work..
Adds no new blocks, items or other content.
Replaces 3 of vanilla Minecraft's models, 2 advancements, 1 item texture, 1 recipe and 1 other data file.
Details
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.1 latest file, for a recent version. 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 its one file, 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 that AI was used to make it
We looked for AI tools in its texts, files, images and sounds and found none.
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.
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found3 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 found67 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 found6 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 file21 code files read
Compatibility
See all 3 filesPoint at or tap a version to see its loaders.
Known conflicts
These projects do not work together with Copper Age Backport: their authors or Copper Age Backport's author say so. If you install both, the game can crash or some features can stop working. Some of them do the same job as Copper Age Backport, so you only need one.
Modpacks using this project
Find modpacks with itModpacks that include Copper Age Backport in at least one of their versions, most downloaded first.
Latest 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.