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    2,046,932 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 24 Oct 2026.636,163 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 24 Oct 2026.269,480 projects gradedProjects with a letter from A to F. Counted on 24 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Fallen Lib

    Mod

    Tools that help mod developers change how other mods work.

    B83/ 100
    • OverviewB
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityMinecraft 1.20.1
    • ModpacksIn 86
    • ReleasesLatest 6 Aug

    Download

    fallen_lib-1.4.6.jar

    Released 6 Aug 2026 · 312.8 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

    • Security checks passed
    • Public source code

    Points lost

    • Releases replaced within 3 days to fix a problem−7 points
    • Releases in only 5 of the last 24 months−2 points
    • Under 5 million downloads−1 point
    • First release only 10 months ago−1 point
    All 11 criteria

    • Maintenance

      2 points lost25 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.3 months ago (6 Aug 2026) 12 / 12
      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.1.20.1 on Forge. 15% or more of the popular mods updated in the last 6 months also have files for 1.20.1. Latest Minecraft: 26.3. 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 5 of the last 24 months 4 / 6

    • Stability

      7 points lost15 / 22
      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.3 of the 75 modpacks with two or more versions removed it in a later one (4%) 10 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.4 of its 10 releases in 2 years needed a quick fix (40%) See the 4 releases0 / 7
      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.None 5 / 5

    • Transparency

      Full points7 / 7
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · rtxyd/fallen_lib-forge-1.20.1 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.Does not apply. CurseForge links are not in our data.

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.461,076 3 / 4

    • Track record

      1 point lost7 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.10 months, 10 releases 7 / 8

    • Security

      Passed
      File 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
    Total83 / 100

    56.6 of the 68 points that apply = 83 out of 100. The points above are rounded to whole numbers.

    About

    Fallen Lib is a developer utility library for mod authors, not a gameplay-content mod for ordinary players. Its FallenPatch API lets developers target specific mod classes or their subclasses and insert method hooks, while FallenInserter methods provide access to the receiver, arguments, and, where applicable, a method’s return value. Its ObjectModifierFactory can copy objects and modify selected numeric fields, using caching and field-name filters, for runtime adjustments without changing the original object. A delegated Mixin Connector registry supports conditionally loaded Mixin configurations for development in IntelliJ IDEA through a mod’s IMixinConnector implementation.

    Written from CurseForge . How we write it

    In-game changes

    Adds no new blocks, items or other content.

    Keeps all of vanilla Minecraft's textures, models and sounds.

    Often used with it

    See all 30
    ApotheosisAFallen Gems & AffixesBL_Ender's CataclysmBIron's Spells 'n SpellbooksAAlex's CavesC

    Details

    Creator
    rtxyd
    License
    Not known
    Downloads
    461K
    Created
    15 Dec 2025
    Official page
    CurseForge
    Links
    Source code

    Security

    No harmful code found

    We checked its files and read their code, without running it.

    What it can do on your computer

    Connects to the internet
    It has code that can go online, for example to check for updates, load skins or send crash reports. No web address is written in its code. See Privacy

    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 · The latest file checked, last on 16 Oct 2026
    • 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
    • Looked for, not foundWe looked for these in the file and did not find them.
      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 · Its one file read
    • 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

    AI

    No sign so far that AI was used to make it

    We looked for AI tools in its texts, files and images 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 · 4 places read
    • 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.
      Not on Modrinth.
    • 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 found
      20 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 found
    • 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
      240 code files read

    Compatibility

    See all 10 files
    Forge
    1.201.2126.126.3

    Point at or tap a version to see its loaders.

    RequiresProjects you must also install for it to work. From the author's lists for its files for recent Minecraft versions, or from its project page.Nothing
    OptionalProjects it can work with but does not need. The author lists them.Nothing
    IncludesProjects packed inside its files.Nothing
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.It has no file for Minecraft versions newer than 1.20.1. Many recently updated mods still support 1.20.1.

    Related projects

    Projects that need Fallen Lib to work.

    ProjectTypeDownloadsGrade
    Apothic FishingBMod18K downloads

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    30150
    Oct 2024: 0 modpacksNov 2024: 0 modpacksDec 2024: 0 modpacksJan 2025: 0 modpacksFeb 2025: 0 modpacksMar 2025: 0 modpacksApr 2025: 0 modpacksMay 2025: 0 modpacksJun 2025: 0 modpacksJul 2025: 0 modpacksAug 2025: 0 modpacksSep 2025: 0 modpacksOct 2025: 0 modpacksNov 2025: 0 modpacksDec 2025: 0 modpacksJan 2026: 0 modpacksFeb 2026: 10 modpacksMar 2026: 17 modpacksApr 2026: 26 modpacksMay 2026: 17 modpacksJun 2026: 12 modpacksJul 2026: 19 modpacksAug 2026: 21 modpacksSep 2026: 24 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 20240
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    Jan 20250
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    Mar 20250
    Apr 20250
    May 20250
    Jun 20250
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    Jan 20260
    Feb 202610
    Mar 202617
    Apr 202626
    May 202617
    Jun 202612
    Jul 202619
    Aug 202621
    Sep 202624

    More modpacks put it in their new versions than a year ago: 20 a month now, 0 a year agoThe average of the last 6 months, compared with the same 6 months a year before. We say it only when the change is large..

    86 modpacks include Fallen Lib in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Soulrend - Dark Fantasy RPG Soulslike1.1M downloadslast version with it 21 Oct 2026Roguelike Adventures and Dungeons 3140K downloadslast version with it 20 Oct 2026Dragon Mine Z90K downloadslast version with it 22 Oct 2026Terramity Awakened - A Calamity Experience!54K downloadslast version with it 25 Sep 2026Fallen World - Prehistoric Corruption51K downloadslast version with it 21 Oct 2026Mystic's Monstrosity - Greedy Edition30K downloadslast version with it 18 Oct 2026Crazy Craft Even More Updated26K downloadslast version with it 10 Oct 2026Neuroshroud: The Abandoned17K downloadslast version with it 1 Jun 2026BeanPack: Regurgitated14K downloadslast version with it 14 Jun 2026Rogue! Mayhem12K downloadslast version with it 26 Aug 2026
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with Fallen Lib. Share: how many of the modpacks with Fallen Lib also have that mod.

    ProjectTypeShareGrade
    ApotheosisAModin 100% of the modpacks with Fallen LibFallen Gems & AffixesBModin 90% of the modpacks with Fallen LibL_Ender's CataclysmBModin 88% of the modpacks with Fallen LibIron's Spells 'n SpellbooksAModin 80% of the modpacks with Fallen LibAlex's CavesCModin 77% of the modpacks with Fallen LibAttributeFixAModin 77% of the modpacks with Fallen LibMowzie's MobsBModin 76% of the modpacks with Fallen LibIce and FireCModin 72% of the modpacks with Fallen LibAmendmentsAModin 70% of the modpacks with Fallen LibYUNG's Better End IslandAModin 69% of the modpacks with Fallen Lib
    1 to 10 of 30123

    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.

    MinecraftLoaderVersionSecuritySendsRequires
    1.20.1·Forge1.4.61.4.6 · fallen_lib-1.4.6.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    10 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.1The latest file for its Minecraft version and loader·Forge1.4.61.4.6 · fallen_lib-1.4.6.jar·6 Aug 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 312.8 KB
    1.20.1·Forge1.4.41.4.4 · fallen_lib-1.4.4.jar·16 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 307.5 KB
    1.20.1·Forge1.4.31.4.3 · fallen_lib-1.4.3.jar·13 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 307.4 KB
    1.20.1·Forge1.4.2-hf1.4.2-hf · fallen_lib-1.4.2-hf.jar·12 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 307.0 KB
    1.20.1·Forge1.4.21.4.2 · fallen_lib-1.4.2.jar·12 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 307.3 KB
    1.20.1·Forge1.4.1-rhf1.4.1-rhf · fallen_lib-1.4.1-rhf.jar·10 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 283.8 KB
    1.20.1·Forge1.4.1-r1.4.1-r · fallen_lib-1.4.1-r.jar·10 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 283.8 KB
    1.20.1·Forge1.3.21.3.2 · fallen_lib-1.3.2.jarBeta·1 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Beta · 119.5 KB
    1.20.1·Forge1.3.11.3.1 · fallen-lib-1.3.1.jar·26 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 117.1 KB
    1.20.1·Forge1.2.0-hotfix1.2.0-hotfix · fallen_lib-1.2.0-hotfix.jarBeta·5 Jan 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Beta · 85.6 KB

    Quick fixes

    In the last 2 years, 4 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 7 points.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.4

    • fallen_lib-1.4.4.jar16 Jul 2026Fix lootCategoryFix worked not as intended…
    • fallen_lib-1.4.2.jar12 Jul 2026Fix the unbound holder issue when client try to join a server…
    • fallen_lib-1.4.2-hf.jar12 Jul 2026Fix extra gem bonus
    • fallen_lib-1.4.1-rhf.jar10 Jul 2026Fix Apotheosis Modern Ragrarok compability.