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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.

    Mekanism: Neutron Activator

    Mod

    Machines that use fusion to process radioactive waste and make fuel.

    B83/ 100
    • OverviewB
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21.1
    • ModpacksIn 22
    • ReleasesLatest 15 May

    Download

    mekanismneutronactivator-1.21.1-1.0.0.jar

    Released 3 Apr 2026 · 71.1 KB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • MekanismBMinecraft 1.21.1 · NeoForge (release 10.7.19.85)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

    • Security checks passed
    • Stable releases

    Points lost

    • No release in 5 months−5 points
    • No public issue tracker−3 points
    • Releases in only 5 of the last 24 months−2 points
    • Under 5 million downloads−2 points
    All 11 criteria

    • Maintenance

      5 points lost22 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.5 months ago (15 May 2026) 9 / 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.1.21.1 on NeoForge, 1.20.1 on Forge. 15% or more of the popular mods updated in the last 6 months also have files for 1.21.1. 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

      Full points22 / 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.None of the 20 modpacks with two or more versions removed it 10 / 10
      Quick 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 / 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

      3 points lost7 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · michanIDE/Mekanism-Neutron-Activator 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.No link to report problems 0 / 3

    • Popularity

      2 points lost2 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.16,096 2 / 4

    • Track record

      2 points lost6 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.14 months, 7 releases 6 / 8

    • Security

      Passed
      File 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
    Total83 / 100

    59.1 of the 71 points that apply = 83 out of 100. The points above are rounded to whole numbers.

    About

    Mekanism: Neutron Activator is an addon that adds machines for neutron activation, supporting Mekanism processes that use neutrons to handle radioactive waste and produce D-T fuel. Its described approach uses a fusion reaction as a neutron source, avoiding dependence on sunlight and weather; the project also describes an alternative method using nuclear waste for environments without sunlight.

    Written from Modrinth . How we write it

    In-game changes

    Does not change the game's code directly.

    Adds 2 blocks: Fission Neutron Activator and Fusion Neutron Activator; 2 recipes.

    Counted from the names and data files in the mod, so the list may not be complete.

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

    Often used with it

    See all 30
    Mekanism GeneratorsBFTB Ultimine (NeoForge)AMekanism ToolsBMekanism:More MachineAApplied MekanisticsB

    Details

    Creator
    michanide
    License
    MIT License
    Downloads
    16K
    Created
    13 Aug 2025
    Official pages
    Modrinth , 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

    Creates settings files
    The mod keeps its settings in the config folder of your game, where you can change or delete them.

    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 · All 3 latest files 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.
      3 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 · Both files 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 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 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 · 5 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.
      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 found
      3 of 17 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
      4 images 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
      19 code files read

    Compatibility

    See all 7 files
    NeoForge
    Forge
    1.181.201.2126.1

    Point at or tap a version to see its loaders.

    Runs onWhere to install it: in your game, on the server, or both. As the author says on Modrinth.Needed in your game and on the server, or you cannot join.
    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.
    Mekanismin some filesB
    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 1.21.1. Many recently updated mods still support 1.21.1.

    Modpacks using this project

    Find modpacks with it

    Modpacks that include Mekanism: Neutron Activator in at least one of their versions, most downloaded first.

    ModpackDownloadsLast version with it
    Heartful Memories5.6K downloadslast version with it 23 Oct 2026Avaritia infinity adventure2.1K downloadslast version with it 19 Dec 2025BlackWells1.6K downloadslast version with it 14 Oct 2026MEKAPLUS1.4K downloadslast version with it 23 Feb 2026The Building an Empire and the of Create1.3K downloadslast version with it 26 Jul 2026Sustain the Brute Encore669 downloadslast version with it 11 May 2026Comix Official Server Modpack544 downloadslast version with it 15 Aug 2026Relic Hunters of the Seasons390 downloadslast version with it 14 Dec 2025Infinite Horizons skyblock373 downloadslast version with it 30 Sep 2026Hephaestus Forge - Sky291 downloadslast version with it 18 Oct 2026
    1 to 10 of 22123

    Often in the same modpacks

    Mods that modpacks often add together with Mekanism: Neutron Activator. Share: how many of the modpacks with Mekanism: Neutron Activator also have that mod.

    ProjectTypeShareGrade
    Mekanism GeneratorsBModin 100% of the modpacks with Mekanism: Neutron ActivatorFTB Ultimine (NeoForge)AModin 86% of the modpacks with Mekanism: Neutron ActivatorMekanism ToolsBModin 86% of the modpacks with Mekanism: Neutron ActivatorMekanism:More MachineAModin 77% of the modpacks with Mekanism: Neutron ActivatorApplied MekanisticsBModin 77% of the modpacks with Mekanism: Neutron ActivatorSophisticated StorageAModin 77% of the modpacks with Mekanism: Neutron ActivatorFTB Chunks (NeoForge)AModin 77% of the modpacks with Mekanism: Neutron ActivatorMekanism AdditionsBModin 73% of the modpacks with Mekanism: Neutron ActivatorPipezAModin 68% of the modpacks with Mekanism: Neutron ActivatorFlux NetworksCModin 68% of the modpacks with Mekanism: Neutron Activator
    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
    1.21.1·NeoForge1.0.01.0.0 · mekanismneutronactivator-1.21.1-1.0.0.jarSends: None foundRequires:MekanismPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·NeoForge, Forge1.3.01.3.0 · mekanismneutronactivator-1.20.1-1.3.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.18.2·Forge1.2.31.2.3 · mekanismneutronactivator-1.2.3.jarSends: None foundRequires:Mekanism, Mekanism GeneratorsMekanism, Mekanism GeneratorsPassedOur checks found nothing harmful in this file. Its code was read too.

    7 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.1The latest file for its Minecraft version and loader·Forge, NeoForge1.3.01.3.0 · mekanismneutronactivator-1.20.1-1.3.0.jar (main file)·15 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 80.8 KB
    1.21.1The latest file for its Minecraft version and loader·NeoForge1.0.01.0.0 · mekanismneutronactivator-1.21.1-1.0.0.jar (main file)·3 Apr 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 71.1 KB
    1.20.1·Forge, NeoForge1.2.01.2.0 · mekanismneutronactivator-1.20.1-1.2.0.jar·22 Feb 2026PassedOur checks found nothing harmful in this file. Its code was read too.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 80.6 KB
    1.20.1·Forge1.1.01.1.0 · mekanismneutronactivator-1.20.1-1.1.0.jar (main file)·28 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 73.1 KB
    1.20.1·Forge1.0.11.0.1 · mekanismneutronactivator-1.20.1-1.0.1.jar (main file)·23 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 73.8 KB
    1.20.1·Forge1.0.01.0.0 · mekanismneutronactivator-1.20.1-1.0.0.jar (main file)·13 Aug 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 73.8 KB
    1.18.2The latest file for its Minecraft version and loader·Forge1.2.31.2.3 · mekanismneutronactivator-1.2.3.jar (main file)·13 Aug 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 95.4 KB