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

    Crimson Curse: Infection

    Mod

    A spreading infection mutates creatures and turns the world against you.

    C73/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21.8
    • ModpacksIn 8
    • ReleasesLatest 15 May

    Download

    crimson_curse-1.4.1.jar Beta

    Released 27 Jan 2026 · 5.2 MB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade C

    How grades work

    Strengths

    • Security checks passed

    Points lost

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

    • Maintenance

      3 points lost24 / 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.1.21.8 on Fabric, NeoForge and Quilt, 1.21.5 on Forge. 53% of the 718 popular Fabric 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 11 of the last 24 months 6 / 6

    • Stability

      3 points lost19 / 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.2 of the 5 modpacks with two or more versions removed it in a later one (40%) 10 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.6 of its 27 releases in 2 years needed a quick fix (22%) See the 6 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.42,415 3 / 4

    • Track record

      2 points lost6 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.19 months, 63 releases 6 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 4 latest files for recent Minecraft versions. See Security
    Total73 / 100

    51.7 of the 71 points that apply = 73 out of 100. The points above are rounded to whole numbers.

    Images

    • Infected Area
    • Infected Area
    • Infected Area
    • Infected Area
    • Infected Area
    • Infected Area
    • Titan Spawning
    • Infected Iceberg (V1.4.3+)
    • Infected Plains Biome (V1.4.3+)
    • Crimsonified Human
    • Crimsonified Skeleton
    • Crimsonified Villager
    • Crimsonified Husk
    • Crimsonified Drowned
    • Crimsonified Drowned (Trident)
    • Crimsonified Bogged
    • Crimsonified Wither Skeleton
    • Crimsonified Wither Skeleton (Angry)
    • Decayed Human
    • Decayed Skeleton
    • Decayed Villager
    • Decayed Husk
    • Decayed Drowned
    • Decayed Drowned (Trident)
    • Decayed Bogged
    • Decayed Wither Skeleton
    • Decayed Wither Skeleton (Angry)
    • Cursor
    • Bloodlink Sentry
    • Bloodlink Piercer
    • Stage 1 Bloodlink
    • Stage 2 Bloodlink
    • Stage 3 Bloodlink
    • Crimson Worm
    • Distributor
    • Raidlink
    • Sky Bomber
    • Rusher
    • Knight
    • Devourer
    • Emperor
    • Mangler
    • Pummeler
    • Juggernaut
    • Kraken
    • Drill
    • Osiris
    • Titan Drill
    • Monarch
    • Nodes
    • Beacon Purifier
    • Primal Gear
    • Purified Gear

    About

    Crimson Curse: Infection is a survival-horror mod about a Nether-born virus spreading through the Overworld, infecting terrain and turning plants and animals into hostile mutations. After five in-game days, a Bloodlink appears and begins converting its surroundings into Crimson Infection and, later, Crimson Decay; as infected blocks and mobs accumulate Mass, the infection advances through seven phases that trigger events such as new Bloodlinks, raids, and enemy evolutions. Bloodlinks grow more dangerous as they develop: when threatened, they can summon Pods and Sentries, empower nearby invaders, and coordinate attacks with other Bloodlinks, while later-phase Distributors can influence which events target players. The infection adds Crimsonified and stronger Decayed versions of familiar mobs, including humans, skeletons, husks, villagers, drowned, bogged, and wither skeletons, each with distinct attacks such as poisonous projectiles, climbing, dragging victims underwater, or digging roots. Its original creatures include Primal biome mobs such as the heavy-hitting Crimson Worm, poison-inflicting Raptor, explosive Pyrobomber, armored Knight, and flying Devourer; stronger Evolved forms include the Emperor, Harbinger, Napalmer, Juggernaut, and Kraken. Raids send Raidlinks and falling Pods toward players, while Titan Eggs can bring in powerful Titans such as Osiris; some advanced enemies summon drills that tunnel through blocks toward their targets, so sturdy construction and careful positioning matter. Defeating the new creatures yields materials for crafting stronger equipment, and the escalating invasion rewards players who eliminate Bloodlinks early and adapt their defenses as enemies gain the ability to break through terrain. The creatures are immune to fire but vulnerable to the Smite enchantment, and their attacks can impose effects such as Fragility, which adds damage taken, or Wound-Stasis, which prevents healing.

    Written from Modrinth . How we write it

    In-game changes

    Does not change the game's code directly.

    Adds 3 biomes, 1 dimension, 16 enchantments, 60 recipes, 104 advancements and 44 loot tables.

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

    Replaces 148 of vanilla Minecraft's models, 4 block textures, 4 mob and entity textures, 2 enchantments and 1 advancement.

    Details

    Creator
    HAILFIRE5445
    License
    All rights reserved
    Downloads
    42K
    Created
    9 Apr 2025
    Official pages
    Modrinth , CurseForge
    Links
    Discord

    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 · All 4 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.
      4 latest files: the newest file for each Minecraft version and loader. All 4 are 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 · All 4 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 all 4 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 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
      20 of 40 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
      450 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
      2 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

    Compatibility

    See all 63 files
    Fabric
    NeoForge
    Forge
    Quilt
    Data pack
    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.Its newest file is for 1.21.8. It has no file for the 5 newer Minecraft versions. It also supports 1.21.1, a version many recently updated mods still support.

    Modpacks using this project

    Find modpacks with it

    Modpacks that include Crimson Curse: Infection in at least one of their versions, most downloaded first.

    ModpackDownloadsLast version with it
    Spore Uprising168 downloadslast version with it 7 Jul 2026Cherry Blossom Pack 157 downloadslast version with it 12 Aug 2025THE CRIMSON CURSE INFECTION150 downloadslast version with it 12 Jun 2026Applied Aeronautics110 downloadslast version with it 23 Jun 2026CL-SMP-SUNRISE103 downloadslast version with it 23 Jan 2026Allegro Way - Lava Čiken94 downloadslast version with it 6 Oct 2025Quantum Express86 downloadslast version with it 27 May 2026Re- Experience48 downloadslast version with it 6 Apr 2026

    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
    1.21.5 to 1.21.8·Fabric, NeoForge, Quilt1.4.1-mod1.4.1-mod · crimson_curse-1.4.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.5·Forge1.3.2-mod1.3.2-mod · crimson_curse-1.3.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21 to 1.21.1·Fabric, NeoForge, Quilt1.4.3.1-mod1.4.3.1-mod · crimson_curse-1.4.3.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1·Forge1.3.2-mod1.3.2-mod · crimson_curse-1.3.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    63 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21 to 1.21.11.21 to 1.21.1The latest file for its Minecraft version and loader·Fabric, NeoForge, Quilt1.4.3.1-mod1.4.3.1-mod · crimson_curse-1.4.3.1.jar (main file)Beta·15 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 11.7 MB
    1.21 to 1.21.11.21 to 1.21.1·Data pack1.4.3.11.4.3.1 · Crimson Curse Data Pack 1.21.1 V1.4.3.1.zip (main file, 1 other file in this version not shown)Beta·15 May 2026Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 637.3 KB
    1.21 to 1.21.11.21 to 1.21.1·Fabric, NeoForge, Quilt1.4.3-mod1.4.3-mod · crimson_curse-1.4.3.jar (main file)Beta·3 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 11.6 MB
    1.21 to 1.21.11.21 to 1.21.1·Data pack1.4.31.4.3 · Crimson Curse Data Pack 1.21.1 V1.4.3.zip (main file, 1 other file in this version not shown)Beta·3 May 2026Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 625.1 KB
    1.21 to 1.21.11.21 to 1.21.1·Fabric, NeoForge, Quilt1.4.2.11.4.2.1 · crimson_curse-1.4.2.1.jarBeta·14 Mar 2026PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Beta · 10.8 MB
    1.21 to 1.21.11.21 to 1.21.1·Fabric, NeoForge, Quilt1.4.2.1-mod1.4.2.1-mod · crimson_curse-1.4.2.1.jar (main file)Beta·14 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthNot on CurseForgeDownload · Beta · 10.8 MB
    1.21 to 1.21.11.21 to 1.21.1·Data pack1.4.2.11.4.2.1 · Crimson Curse Data Pack 1.21.1 V1.4.2.1.zip (main file, 1 other file in this version not shown)Beta·14 Mar 2026Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 521.3 KB
    1.21 to 1.21.11.21 to 1.21.1·Fabric, NeoForge, Quilt1.4.2-mod1.4.2-mod · crimson_curse-1.4.2.jar (main file)Beta·27 Feb 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 10.7 MB
    1.21 to 1.21.11.21 to 1.21.1·Data pack1.4.21.4.2 · Crimson Curse Data Pack 1.21.1 V1.4.2.zip (main file, 1 other file in this version not shown)Beta·25 Feb 2026Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 513.1 KB
    1.21 to 1.21.11.21 to 1.21.1·Fabric, NeoForge, Quilt1.4.1-mod1.4.1-mod · crimson_curse-1.4.1.jar (main file)Beta·27 Jan 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 5.2 MB
    1.21.5 to 1.21.81.21.5 to 1.21.8The latest file for its Minecraft version and loader·Fabric, NeoForge, Quilt1.4.1-mod1.4.1-mod · crimson_curse-1.4.1.jar (main file)Beta·27 Jan 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 5.2 MB
    1.21 to 1.21.11.21 to 1.21.1·Data pack1.4.11.4.1 · Crimson Curse Data Pack 1.21.1 V1.4.1.zip (main file, 1 other file in this version not shown)Beta·7 Jan 2026Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 489.8 KB
    1.21.5 to 1.21.81.21.5 to 1.21.8·Data pack1.4.11.4.1 · Crimson Curse Data Pack 1.21.5-1.21.8 V1.4.1.zip (main file, 1 other file in this version not shown)Beta·7 Jan 2026Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 485.8 KB
    1.21.1·Fabric, NeoForge, Quilt1.4-mod1.4-mod · crimson_curse-1.4.jar (main file)Beta·1 Jan 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 1.2 MB
    1.21.1·Data pack1.41.4 · Crimson Curse Data Pack 1.21.1 V1.4.zip (main file)Beta·1 Jan 2026Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 488.3 KB
    1.21.1·Data pack1.3.21.3.2 · Crimson Curse Resource Pack 1.21.1 V1.3.2.zip (main file)Beta·5 Nov 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 609.9 KB
    1.21.5·Data pack1.3.21.3.2 · Crimson Curse Resource Pack 1.21.5 V1.3.2.zip (main file)Beta·5 Nov 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 658.7 KB
    1.21.1The latest file for its Minecraft version and loader·Fabric, Forge, NeoForge, Quilt1.3.2-mod1.3.2-mod · crimson_curse-1.3.2.jar (main file, 1 other file in this version not shown)Beta·31 Oct 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 4.0 MB
    1.21.1·Data pack1.3.21.3.2 · Crimson Curse Data Pack 1.21.1 V1.3.2.zip (main file, 1 other file in this version not shown)Beta·31 Oct 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 411.1 KB
    1.21.5The latest file for its Minecraft version and loader·Fabric, NeoForge, Forge, Quilt1.3.2-mod1.3.2-mod · crimson_curse-1.3.2.jar (main file, 1 other file in this version not shown)Beta·31 Oct 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 4.0 MB
    1 to 20 of 631234

    Quick fixes

    In the last 2 years, 6 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.6

    • 1.3.1.1 and 2 other releases24 Aug 2025BUG FIXES The issue fixed here is 1.21.1-exclusive, and this is…
    • 1.3.122 Aug 2025…Osiris' Brain also shows up. BUG FIXES CRIMSONIFIED & DECAYED MOBS: - Skeleton: Decayed…
    • 1.2.227 Jun 2025…what they would previously spawn with. BUG FIXES SYSTEMS - Raids: Fixed an issue where Raids…
    • 1.2.1.125 Jun 2025BUG FIXES These issues are 1.21.1-exclusive, and this is just a…