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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.

    Immersive structures

    Mod

    New buildings that fit the look of each overworld biome.

    B81/ 100
    • OverviewB
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21.11
    • ModpacksIn 1,503
    • ReleasesLatest 12 Mar

    Download

    [fabric]imst-2.2.1c.jar

    Released 12 Mar 2026 · 450.5 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

    • Public source code and issue tracker
    • Widely used

    Points lost

    • No release in 7 months−7 points
    • Releases in only 3 of the last 24 months−4 points
    • Some modpacks removed it−1 point
    All 11 criteria

    • Maintenance

      8 points lost19 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.7 months ago (12 Mar 2026). 168 modpacks released in the last 6 months still include it, so it keeps 66% of these points. 8 / 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.1.21.11 on NeoForge and Fabric, 1.21.5 on Forge and Quilt. 15% or more of the popular mods updated in the last 6 months also have files for 1.21.11. 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 3 of the last 24 months 2 / 6

    • Stability

      1 point lost14 / 15
      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.50 of the 337 modpacks with two or more versions removed it in a later one (15%) See the 50 modpacks9 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.
      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 points10 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · ChoiceTheorem/Immersive-structures 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · ChoiceTheorem/Immersive-structures 3 / 3

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.5,130,962 4 / 4

    • Track record

      3 points lost5 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.4.3 years, 17 releases 5 / 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
    Total81 / 100

    51.8 of the 64 points that apply = 81 out of 100. The points above are rounded to whole numbers.

    Images

    • Majestic Airship
    • Flower dome
    • Observatory

    About

    Immersive Structures adds biome-themed buildings to the Overworld, designed to fit the atmosphere and aesthetics of their surroundings. Examples include flower domes in plains, airships in jungles, observatories for snowy landscapes and the sky, and El Dorado pyramids in mesa biomes. The mod is intended to grow to around 30 unique structures and does not alter vanilla structures; additions appear in newly generated chunks. It is server-side and is compatible with world-generation mods such as Terralith, Oh Biome You'll Go, and Biomes O' Plenty, as well as structure mods such as Towns and Towers and Repurposed Structures.

    Written from Modrinth and CurseForge . How we write it

    In-game changes

    Does not change the game's code directly.

    Adds 31 structures and 19 loot tables.

    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
    Towns and TowersBChoiceTheorem's Overhauled VillageAAttributeFixAYUNG's Better Desert TemplesAYUNG's Better Ocean MonumentsA

    Details

    Creator
    ChoiceTheorem
    License
    Creative Commons Attribution Non Commercial Share Alike 4.0 International
    Downloads
    5.1M
    Created
    26 Jun 2022
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues , 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 5 latest files checked, last on 15 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.
      5 latest files: the newest file for each Minecraft version and loader. The answer above is about the 4 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 code history 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.
    • Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.
      Nothing found
    • 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 31 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
      1 image 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
      4 code files read

    Compatibility

    See all 17 files
    Fabric
    NeoForge
    Forge
    Quilt
    Data pack
    1.191.201.2126.1

    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.Install it on the server. Players join without installing it. It also works in singleplayer.
    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 1.21.11. Many recently updated mods still support 1.21.11.

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    80400
    Oct 2024: 67 modpacksNov 2024: 48 modpacksDec 2024: 60 modpacksJan 2025: 59 modpacksFeb 2025: 51 modpacksMar 2025: 61 modpacksApr 2025: 44 modpacksMay 2025: 40 modpacksJun 2025: 51 modpacksJul 2025: 46 modpacksAug 2025: 49 modpacksSep 2025: 48 modpacksOct 2025: 39 modpacksNov 2025: 40 modpacksDec 2025: 47 modpacksJan 2026: 42 modpacksFeb 2026: 41 modpacksMar 2026: 40 modpacksApr 2026: 47 modpacksMay 2026: 43 modpacksJun 2026: 56 modpacksJul 2026: 54 modpacksAug 2026: 45 modpacksSep 2026: 47 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 202467
    Nov 202448
    Dec 202460
    Jan 202559
    Feb 202551
    Mar 202561
    Apr 202544
    May 202540
    Jun 202551
    Jul 202546
    Aug 202549
    Sep 202548
    Oct 202539
    Nov 202540
    Dec 202547
    Jan 202642
    Feb 202641
    Mar 202640
    Apr 202647
    May 202643
    Jun 202656
    Jul 202654
    Aug 202645
    Sep 202647

    1,503 modpacks include Immersive structures in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Cursed Walking - A Modern Zombie Apocalypse8.7M downloadslast version with it 29 Sep 2022Better MC [FABRIC] BMC17.9M downloadslast version with it 24 Jul 2022Medieval MC [FABRIC] MMC14.4M downloadslast version with it 31 May 2023Fantasy MC Fabric1.9M downloadslast version with it 2 Oct 2023MineColonies: Dimensional Adventure1.2M downloadslast version with it 1 Jun 2023New Game - An Improved Experience | 26.1.2 UPDATE!984K downloadslast version with it 6 Dec 2023THE DWELLERS689K downloadslast version with it 25 Dec 2023Medieval MC [FORGE] MMC3680K downloadslast version with it 12 Jun 2023From the Fog Reimagined608K downloadslast version with it 19 Jul 2024StaTech Industry465K downloadslast version with it 22 Jan 2025
    1 to 10 of 30123

    Often in the same modpacks

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

    ProjectTypeShareGrade
    Towns and TowersBModin 61% of the modpacks with Immersive structuresChoiceTheorem's Overhauled VillageAModin 54% of the modpacks with Immersive structuresAttributeFixAModin 49% of the modpacks with Immersive structuresYUNG's Better Desert TemplesAModin 48% of the modpacks with Immersive structuresYUNG's Better Ocean MonumentsAModin 48% of the modpacks with Immersive structuresTerralithAModin 47% of the modpacks with Immersive structuresYUNG's Better Nether FortressesAModin 46% of the modpacks with Immersive structuresYUNG's BridgesAModin 45% of the modpacks with Immersive structuresYUNG's Better Witch HutsAModin 45% of the modpacks with Immersive structuressparkAModin 44% of the modpacks with Immersive structures
    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 to 1.21.11·Fabric2.2.1c2.2.1c · [Fabric]imst-2.2.1c.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21 to 1.21.11·NeoForge2.2.1c2.2.1c · [neoforge]imst-2.2.1c.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21 to 1.21.5·Forge, Quilt2.2.0-mod2.2.0-mod · immersive-structures-2.2.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20 to 1.20.6·Fabric, Forge, Quilt2.1.02.1.0 · imst-2.1.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.19 to 1.19.4·Fabric, Forge, Quilt2.0.7a2.0.7a · [Universal]Immersive Structures-2.0.7a.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    17 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21 to 1.21.111.21 to 1.21.11The latest file for its Minecraft version and loader·NeoForge2.2.1c2.2.1c · [neoforge]imst-2.2.1c.jar (main file)·12 Mar 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 449.3 KB
    1.21 to 1.21.111.21 to 1.21.11The latest file for its Minecraft version and loader·Fabric2.2.1c2.2.1c · [fabric]imst-2.2.1c.jar (main file)·12 Mar 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 450.5 KB
    1.21 to 1.21.71.21 to 1.21.7·NeoForge2.2.1b2.2.1b · [neoforge]imst-2.2.1b.jar (main file)·14 Jul 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthNot on CurseForgeDownload · Stable · 449.7 KB
    1.21 to 1.21.71.21 to 1.21.7·Fabric2.2.1b2.2.1b · [fabric]imst-2.2.1b.jar (main file)·14 Jul 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthNot on CurseForgeDownload · Stable · 450.5 KB
    1.21 to 1.21.51.21 to 1.21.5·NeoForge2.2.12.2.1 · [neoforge]imst-2.2.1.jar (main file)·25 Apr 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 840.7 KB
    1.21 to 1.21.51.21 to 1.21.5·Fabric2.2.12.2.1 · [imst]fabric-2.2.1.jar (main file)·25 Apr 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForge. CurseForge file not checked: its author does not let other sites download it from CurseForge.Download · Stable · 841.6 KB
    1.21 to 1.21.51.21 to 1.21.5The latest file for its Minecraft version and loader·Fabric, Forge, Quilt2.2.0-mod2.2.0-mod · immersive-structures-2.2.0.jar (main file)·28 Jul 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthNot on CurseForgeDownload · Stable · 757.4 KB
    1.21·Data pack2.2.02.2.0 · [Universal]imst-v2.2.0.zip (main file)·28 Jul 2024Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Stable · 464.5 KB
    1.20 to 1.20.61.20 to 1.20.6The latest file for its Minecraft version and loader·Fabric, Forge, Quilt2.1.02.1.0 · imst-2.1.0.jar (main file)·11 Jun 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 452.7 KB
    1.19 to 1.19.41.19 to 1.19.4The latest file for its Minecraft version and loader·Fabric, Forge, Quilt2.0.7a2.0.7a · [Universal]Immersive Structures-2.0.7a.jar (main file)·19 Apr 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 450.9 KB
    1.19 to 1.19.41.19 to 1.19.4·Fabric, Forge, Quilt2.0.72.0.7 · [Universal]Immersive Structures-2.0.7.jar (main file)·25 Dec 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 450.9 KB
    1.19 to 1.19.21.19 to 1.19.2·Fabric, Forge, Quilt2.0.62.0.6 · [Universal]Immersive_Structures_v2-0-6.jar (main file)·20 Nov 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 331.1 KB
    1.19 to 1.19.21.19 to 1.19.2·Fabric, Forge, Quilt2.0.52.0.5 · [Universal]Immersive_Structures_v2-0-5.jar (main file)·6 Nov 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 316.0 KB
    1.19 to 1.19.21.19 to 1.19.2·Fabric, Forge, Quilt2.0.42.0.4 · [Universal]Immersive_Structures_v2-0-4.jar (main file)·14 Oct 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 290.1 KB
    1.19 to 1.19.21.19 to 1.19.2·Fabric, Forge, Quilt2.0.32.0.3 · [Universal]Immersive_Structures_v2-0-3.jar (main file)·27 Sep 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 277.7 KB
    1.19 to 1.19.21.19 to 1.19.2·Fabric, Forge2.0.22.0.2 · IMST_2_0_2.jar (main file)·9 Jul 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 234.9 KB
    1.19·Fabric, Forge2.0.12.0.1 · IMST_2_0_1.jar·26 Jun 2022Not checkedIts author does not let other sites download this file from CurseForge, so we cannot check it.Not on ModrinthOpen 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.