Skip to content
BrowseScan your modsScan

    No project matches this search.

    2,055,424 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 2026.269,392 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.

    Contamination

    Mod

    The world is ending, the air fills with deafening silence. Can you survive?

    C75/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityMinecraft 1.21.1
    • ModpacksIn none
    • ReleasesLatest 27 Jul

    Download

    contamination-2.3.6-1.21.1.jar

    Released 27 Jul 2026 · 66.1 MB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade C

    How grades work

    Strengths

    • Security checks passed
    • Around for years

    Points lost

    • No source code link−7 points
    • Releases replaced within 3 days to fix a problem−3 points
    • No public issue tracker−3 points
    • Releases in only 6 of the last 24 months−1 point
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      1 point lost26 / 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 (27 Jul 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.1.21.1 on NeoForge. 65% of the 995 popular NeoForge 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 6 of the last 24 months 5 / 6

    • Stability

      3 points lost9 / 12
      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.Not measured yet.
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.4 of its 19 releases in 2 years needed a quick fix (21%) See the 4 releases4 / 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

      10 points lost0 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.No link on the project page 0 / 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

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.27,107 3 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.14 months, 19 releases 8 / 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
    Total75 / 100

    45.5 of the 61 points that apply = 75 out of 100. The points above are rounded to whole numbers.

    Images

    • An assimilated landscape
    • Huggers latching onto the player
    • Spreader Bossfight
    • A Radiation Suppressor
    • Upgrades
    • Something that used to be a forest

    About

    Contamination turns the world into a progressively hostile wasteland, challenging players to survive as contamination advances through three stages. As the stages progress, vegetation decays faster, contaminated creatures grow stronger, elite contaminated mobs appear, and the Spreader can emerge; the Spreader can also claim territory and transform it into an assimilated landscape. Survival depends on a charged Hazmat Suit, upgraded and recharged at a Suit Workstation, and powered Particle Suppressors that create safe areas where ordinary mobs can live. RE-rich items provide the energy for this equipment, while Particle Permutators turn fuels into redstone, an RE-rich resource; an Entity Arranger uses RE and DNA samples to clone a random animal or villager. The world also contains custom structures with exclusive loot, including Civilization Remnants that offer resources that may become harder to find after contamination spreads. Contamination adds hostile creatures such as Huggers, Shrieker, and Stalker, and the Spreader has a boss fight whose difficulty scales with the world's difficulty. Configuration options let players adjust the progression and fog colors, among other settings.

    Written from Modrinth and CurseForge . How we write it

    In-game changes

    Changes the game's code in 5 areas: Blocks and fluidsChanges 9 game code files in this area: how blocks, fluids and redstone work., Server and world logicChanges 2 game code files in this area: the world, commands, scoreboards, saved data and game rules., PlayerChanges 1 game code file in this area: your character: movement, abilities, hunger and controls., Inventory and itemsChanges 1 game code file in this area: items, chests and other containers, crafting and enchanting. and Mobs and their behaviorChanges 1 game code file in this area: mobs, animals, villagers, projectiles and how they move and act..

    Adds 20 blocks, 67 items, 6 mobs, 2 other entities, 4 structures, 68 recipes, 24 loot tables and 27 sounds.

    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.

    Details

    Creator
    SakePlayS
    License
    MIT License
    Downloads
    27K
    Created
    21 Aug 2025
    Official pages
    Modrinth , CurseForge

    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 · 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
    • 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 · 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
    • 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 · 6 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.
    • 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
      2 of 36 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
      141 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 found
      27 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
      289 code files read

    Compatibility

    See all 19 files
    NeoForge
    1.2126.126.2

    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.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 1.21.1. Many recently updated mods still support 1.21.1.

    Modpacks using this project

    No known modpack uses it.

    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·NeoForge2.3.62.3.6 · contamination-2.3.6-1.21.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    19 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1The latest file for its Minecraft version and loader·NeoForge2.3.62.3.6 · contamination-2.3.6-1.21.1.jar (main file)·27 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 66.1 MB
    1.21.1·NeoForge2.3.52.3.5 · contamination-2.3.5-1.21.1.jar (main file)·23 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthNot on CurseForgeDownload · Stable · 66.1 MB
    1.21.1·NeoForge2.3.42.3.4 · contamination-2.3.4-1.21.1.jar (main file)·22 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 66.1 MB
    1.21.1·NeoForge2.3.32.3.3 · contamination-2.3.3-1.21.1.jar (main file)·20 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 66.1 MB
    1.21.1·NeoForge2.3.22.3.2 · contamination-2.3.2-1.21.1.jar (main file)·20 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthNot on CurseForgeDownload · Stable · 66.1 MB
    1.21.1·NeoForge2.32.3 · contamination-2.3-1.21.1.jar (main file)·19 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 66.1 MB
    1.21.1·NeoForge2.2.12.2.1 · contamination-2.2.1.jar·25 May 2026PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 65.6 MB
    1.21.1·NeoForge2.22.2 · contamination-2.2.jar·24 May 2026PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 65.6 MB
    1.21.1·NeoForge2.1.32.1.3 · irradiation-2.1.3.jar (main file)·1 Jan 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 39.4 MB
    1.21.1·NeoForge2.1.22.1.2 · irradiation-2.1.2.jar·24 Dec 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 39.4 MB
    1.21.1·NeoForge2.1.12.1.1 · irradiation-2.1.1.jar (main file)·21 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 39.4 MB
    1.21.1·NeoForge2.12.1 · irradiation-2.1.jar (main file)·21 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 39.4 MB
    1.21.1·NeoForge2.0.12.0.1 · irradiation-2.0.1.jar (main file)·9 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 15.0 MB
    1.21.1·NeoForge2.02.0 · irradiation-2.0.jar (main file)·8 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 15.0 MB
    1.21.1·NeoForge1.41.4 · irradiation-1.4-neoforge-1.21.1.jar (main file)·21 Nov 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.0 MB
    1.21.1·NeoForge1.31.3 · irradiation-1.3-neoforge.1.21.1.jar (main file)·21 Nov 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.0 MB
    1.21.1·NeoForge1.21.2 · irradiation-1.2.jar (main file)·29 Aug 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.0 MB
    1.21.1·NeoForge1.11.1 · irradiation-1.1.jar (main file)·23 Aug 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 3.6 MB
    1.21.1·NeoForge1.01.0 · irradiation-1.0.jar (main file)·21 Aug 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 3.6 MB

    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 3 points.

    See them, newest first

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

    • Contamination 2.3.3 - NeoForge 1.21.120 Jul 2026hotfix: fixed the RE Converter not being mineable and not…
    • irradiation-2.1.2-neoforge-1.21.124 Dec 2025
    • irradiation-2.1.1-neoforge.1.21.121 Dec 2025Fixed ru_ru.json missing a translation - Fixed exposure time…
    • irradiation-1.4-neoforge-1.21.1.jar21 Nov 2025…the crops that are not within safe zones. - Hotfix: higher radiation levels now apply charge drain correctly…