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    2,053,304 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 25 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 25 Oct 2026.269,472 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
    How it worksMalware we foundAPIAboutPrivacyTermsContact

    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    More (Custom) Pollutants

    Modpack

    This Modpack add a couple more pollutants to Pollution of the Realms

    72%Modpack: 72% of its graded mods are A or Bof mods A or B
    • Overview72%
    • SecurityPartly checked
    • Privacy1 sends data
    • AIIn 3 mods
    • CompatibilityMinecraft 1.21.1
    • ReleasesLatest 8 Jan

    Download

    Custom Pollutants v1.4.zip

    Released 8 Jan 2026 · 2.4 MB

    Partly checked: all 46 mods checked, the pack's own files not yet. See Security

    Open on CurseForge
    OverviewSecurityPrivacyAICompatibilityReleases

    Mod grades

    How grades work

    Modpacks get no grade of their own, so we show the grades of its mods. Of its 46 graded mods, 33 are graded A or B, 11 C and 2 D to F. Its last update came out 10 months ago, for Minecraft 1.21.1. See the mods

    Images

    • Flourine
    • Chlorine
    • Hydrogen
    • Oxygen
    • Ozone
    • Nitrogen
    • Methane
    • Coaldust
    • Carbon Monoxide

    Mods in this pack46 of 46 checked

    The mods of its newest release (Minecraft 1.21.1 · NeoForge, 8 Jan 2026). Each check result is for the latest files of that mod, which may not be the version in this pack.

    ModGradeSecurity
    Just Enough Items (JEI)Mod · 725.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.GeckolibMod · 500.6M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Kotlin for ForgeMod · 263.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Immersive EngineeringMod · 201.1M downloadsCPassedPassed: our checks found nothing harmful in the latest files.MekanismMod · 182M downloadsBPassedPassed: our checks found nothing harmful in the latest files.Refined StorageMod · 160.9M downloadsBPassedPassed: our checks found nothing harmful in the latest files.Mekanism GeneratorsMod · 160.5M downloadsBPassedPassed: our checks found nothing harmful in the latest files.Fzzy ConfigMod · 139.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ForgeEndertechMod · 134M downloadsBPassedPassed: our checks found nothing harmful in the latest files.Mekanism ToolsMod · 123.4M downloadsBPassedPassed: our checks found nothing harmful in the latest files.PneumaticCraft: RepressurizedMod · 81.9M downloadsAPassedPassed: our checks found nothing harmful in the latest files.EMIMod · 81.1M downloadsBPassedPassed: our checks found nothing harmful in the latest files.Almost UnifiedMod · 75.9M downloadsAPassedPassed: our checks found nothing harmful in the latest files.TxniLibMod · 70.4M downloadsCPassedPassed: our checks found nothing harmful in the latest files.Immersive PetroleumMod · 58M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Just Enough Effect Descriptions (JEED)Mod · 43.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Advanced ChimneysMod · 40.5M downloadsBPassedPassed: our checks found nothing harmful in the latest files.EMI LootMod · 36.5M downloadsCPassedPassed: our checks found nothing harmful in the latest files.Atlas LibMod · 35.6M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Just Enough Mekanism MultiblocksMod · 32.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Mekanism AdditionsMod · 31.7M downloadsBPassedPassed: our checks found nothing harmful in the latest files.Distraction Free Recipes (EMI / REI / JEI)Mod · 28.2M downloadsBPassedPassed: our checks found nothing harmful in the latest files.EMI EnchantingMod · 27.9M downloadsCPassedPassed: our checks found nothing harmful in the latest files.Pollution of the RealmsMod · 26.3M downloadsCPassedPassed: our checks found nothing harmful in the latest files.EMIffectMod · 24.2M downloadsCPassedPassed: our checks found nothing harmful in the latest files.
    1 to 25 of 4612
    Changes since the previous release · 4 added

    Compared with the release of 31 Dec 2025 for the same platform, Minecraft version and loader. We do not compare the versions of the mods yet.

    Added
    AU: Immersive EngineeringImmersive PetroleumAlmost UnifiedJust Enough Immersive Multiblocks
    Share graded A or B
    down 2 points

    Details

    Creator
    Max92306
    License
    Not known
    Downloads
    1.4K
    Created
    28 Apr 2025
    Official page
    CurseForge

    Security

    No harmful code found in the mods we checked

    We checked all 46 mods, without running them.

    We have not checked the files in the pack itself yet (settings, scripts).

    Why we show this: a modpack installs the files of its mods, and each mod runs on your computer like any program. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: a modpack has no grade of its own, and each mod's result counts in that mod's grade.

    How we checked · All 46 mods checked
    • Its projects
      See what is in this pack
      46 mods
    • Files in the pack itself
      Not checked yet.

    Privacy

    1 mod sends something about you

    We read the code of 45 of its 46 mods, without running it.

    PneumaticCraft: RepressurizedCrash reports

    Why we show this: a modpack runs the code of its mods, and 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 · 45 of 46 mods read
    • Go online onlyTheir code contacts a web address, for example to check for updates. We found nothing it sends about you.
      Immersive EngineeringForgeEndertechMekanism Additions
      3 mods
    • Send nothing
      Their code contacts no web address.
      41 mods
    • Not read yet
      We have not read their code yet.
      1 mod

    AI

    AI used in 3 of the 43 mods we checked

    We found an AI tool in them, or their authors declared AI content.

    3 mods are not checked yet.

    Just Enough Items (JEI)Claude CodeRefined StorageClaude CodeEMI++Claude Code

    Made with AI: not checked yet

    We have not looked for AI tools in the pack itself yet.

    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 · 1 place 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.
    • 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 in the description
      Changelogs not read yet
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Not read yet
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Not read yet

    Compatibility

    See all 20 files
    NeoForge
    1.2126.126.2

    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.46 projects, listed in the Overview tab.
    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 1.21.1. Many recently updated mods still support 1.21.1.

    20 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1·NeoForge1.4.41.4.4 · Custom Pollutants v1.4.zip·8 Jan 2026Partly checkedPartly checked: all 46 mods checked, the pack's own files not yet.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.4.31.4.3 · Custom Pollutants v1.4.zip·31 Dec 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.4.21.4.2 · Custom Pollutants v1.4.zip·15 Dec 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.4.11.4.1 · Custom Pollutants v1.4.zip·13 Dec 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.41.4 · Custom Pollutants v1.4.zip·13 Dec 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.3.11.3.1 · Custom Pollutants v1.3.zip·12 Dec 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.3.01.3.0 · Custom Pollutants v1.3.zip·1 Nov 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.2.11.2.1 · Custom Pollutants v1.2.zip·31 Oct 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.2.01.2.0 · Custom Pollutants v1.2.zip·4 Oct 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.1.31.1.3 · Custom Pollutants v1.1.zip·4 Oct 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.1.21.1.2 · Custom Pollutants v1.1.zip·2 Oct 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.1.11.1.1 · Custom Pollutants v1.1.zip·2 Oct 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForge1.1.01.1.0 · Custom Pollutants v1.1.zip·2 Oct 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForgeCustom-PollutantsCustom-Pollutants · Custom Pollutants.zip·2 Oct 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForgeCustom-PollutantsCustom-Pollutants · Custom Pollutants.zip·29 Sep 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForgeCustom-PollutantsCustom-Pollutants · Custom Pollutants.zip·26 Sep 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForgeCustom-PollutantsCustom-Pollutants · Custom Pollutants.zip·2 May 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForgeCustom-PollutantsCustom-Pollutants · Custom Pollutants.zip·29 Apr 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForgeCustom-PollutantsCustom-Pollutants · Custom Pollutants.zip·29 Apr 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.
    1.21.1·NeoForgeCustom-PollutantsCustom-Pollutants · Custom Pollutants.zip·28 Apr 2025Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Open this file on CurseForgeDownload not available hereIts author does not let other sites download this file. Get it on CurseForge: its logo in "Get it on" opens the file's page.