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    2,054,849 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 2026.269,417 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.

    Hydrological (Overworld Terrain & Biomes)

    Mod

    Explore a fantasy world with new biomes and varied terrain.

    C78/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21.11
    • ModpacksIn 46
    • ReleasesLatest 5 Jul

    Download

    hydrol-1.21.11-1.3.2.jar

    Released 5 Jul 2026 · 901.2 KB

    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

    • Many modpacks removed it−8 points
    • No public issue tracker−3 points
    • No release in 4 months−1 point
    • Releases in only 7 of the last 24 months−1 point
    • Releases replaced within 3 days to fix a problem−1 point
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      2 points lost25 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.4 months ago (5 Jul 2026) 11 / 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, 1.20.6 on Forge. 20% of the 995 popular NeoForge 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 7 of the last 24 months 5 / 6

    • Stability

      9 points lost13 / 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.12 of the 34 modpacks with two or more versions removed it in a later one (35%) See the 12 modpacks2 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.2 of its 15 releases in 2 years needed a quick fix (13%) See the 2 releases6 / 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 · Apothicon02/Hydrological 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

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.91,269 3 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.2.5 years, 36 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 3 latest files for recent Minecraft versions. See Security
    Total78 / 100

    55.5 of the 71 points that apply = 78 out of 100. The points above are rounded to whole numbers.

    Images

    • River
    • Savanna
    • Plains
    • Jungle
    • Taiga Edge
    • Mangrove
    • Dripstone Cave
    • Badlands
    • Deep Dark
    • Lush Caves
    • Floating Cherry Grove
    • Floating Caves
    • Beach & Inland Cliffs
    • (Sparse) Floating Islands

    About

    Hydrological overhauls Overworld generation with recreations of vanilla biomes and handcrafted terrain, including new continents, varied cliffs and beaches, and floating-island or floating-cave world presets. Its landscapes span open plains, savanna, jungle, taiga, mangrove swamp, badlands, and cherry groves, alongside rivers, Dripstone Caves, Lush Caves, and the Deep Dark. Underground ore formations add copper and gold veins to Dripstone Caves, iron and coal veins to Lush Caves, redstone spikes in lava aquifers, and diamond, magma, lapis, or packed-ice shafts above bedrock in other caves. Dozens of new tree types grow from saplings and are placed to avoid overlapping one another, while toggleable decorative blocks include leaf piles, mushroom-block slabs, wood walls, and dry grass. Fireflies appear as particles around tall grass at night, some blocks such as blue ice emit light, and optional fog shifts in tint with temperature. Data-driven content and configuration let users adjust terrain scale and noise, with noise settings controlling how compact or expansive features such as mountains, beaches, and cliffs become.

    Written from Modrinth and CurseForge . How we write it

    In-game changes

    Changes the game's code in 7 areas: Blocks and fluidsChanges 6 game code files in this area: how blocks, fluids and redstone work., World generationChanges 5 game code files in this area: terrain, biomes and structures made when new land is created., Rendering and graphicsChanges 2 game code files in this area: drawing mobs, items, particles and textures on screen., Server and world logicChanges 2 game code files in this area: the world, commands, scoreboards, saved data and game rules., Chunk loading and storageChanges 1 game code file in this area: how the game loads, tracks, saves and unloads chunks., Inventory and itemsChanges 1 game code file in this area: items, chests and other containers, crafting and enchanting. and Game coreChanges 1 game code file in this area: the main loop, lighting and other code the whole game uses..

    Adds 38 blocks and 35 loot tables.

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

    Replaces 43 of vanilla Minecraft's world generation files, 30 models, 9 block textures and 5 tags.

    Often used with it

    See all 30
    Sinytra ConnectorAL_Ender's CataclysmBEssential ModBAI Improvements: Performance TuningAPacket FixerA

    Details

    Creator
    Apothicon
    License
    MIT License
    Downloads
    91K
    Created
    10 Apr 2024
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Discord

    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. Only in its files for NeoForge 1.21.11.

    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 6 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.
      6 latest files: the newest file for each Minecraft version and loader. The answer above is about the 3 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 3 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 3 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
      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
      32 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
      146 code files read

    Compatibility

    See all 36 files
    NeoForge
    Forge
    1.201.2126.126.3

    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 on the server. If your game has it too, you get extra features.
    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.

    Related projects

    Projects made to add things to Hydrological (Overworld Terrain & Biomes).

    ProjectTypeDownloadsGrade
    FlattologicalBData pack1.3K downloads

    Modpacks using this project

    Find modpacks with it

    46 modpacks include Hydrological (Overworld Terrain & Biomes) in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    EL MINE MAS EPICO 244K downloadslast version with it 14 Oct 2026Cardinal Discovery8.1K downloadslast version with it 2 Jun 2026Sonic Block FF3.5K downloadslast version with it 15 Jul 2025a big sink2.9K downloadslast version with it 27 Sep 2026FUSSION-BORN2.3K downloadslast version with it 26 Apr 2025CrisisCraft1.4K downloadslast version with it 1 Jan 2026Dragon Mine The Blood of Light1.4K downloadslast version with it 4 Jul 2026Vile Shadows871 downloadslast version with it 19 Nov 2024Hell Divers: Drop Zone (Based on the books)870 downloadslast version with it 14 Mar 2026Stranded on a Shipment Container757 downloadslast version with it 13 Sep 2026
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with Hydrological (Overworld Terrain & Biomes). Share: how many of the modpacks with Hydrological (Overworld Terrain & Biomes) also have that mod.

    ProjectTypeShareGrade
    Sinytra ConnectorAModin 54% of the modpacks with Hydrological (Overworld Terrain & Biomes)L_Ender's CataclysmBModin 50% of the modpacks with Hydrological (Overworld Terrain & Biomes)Essential ModBModin 50% of the modpacks with Hydrological (Overworld Terrain & Biomes)AI Improvements: Performance TuningAModin 48% of the modpacks with Hydrological (Overworld Terrain & Biomes)Packet FixerAModin 46% of the modpacks with Hydrological (Overworld Terrain & Biomes)BlueprintAModin 46% of the modpacks with Hydrological (Overworld Terrain & Biomes)ChunkyAModin 43% of the modpacks with Hydrological (Overworld Terrain & Biomes)Iron's Spells 'n SpellbooksAModin 43% of the modpacks with Hydrological (Overworld Terrain & Biomes)Better Fps - Render DistanceBModin 43% of the modpacks with Hydrological (Overworld Terrain & Biomes)AmendmentsAModin 43% of the modpacks with Hydrological (Overworld Terrain & Biomes)
    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
    1.21.11·NeoForge1.3.21.3.2 · hydrol-1.21.11-1.3.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1 to 1.21.2·NeoForge1.3.21.3.2 · hydrol-1.21.1-1.3.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1 to 1.20.2·Forge0.15.30.15.3 · hydrological-1.20.1-0.15.3.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.21·NeoForge1.2.11.2.1 · hydrol-1.21.x-1.2.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.5 to 1.20.6·Forge0.12.00.12.0 · hydrological-1.20.x-0.12.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20 to 1.20.4·Forge0.14.00.14.0 · hydrological-1.20.x-0.14.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    36 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.1 to 1.20.21.20.1 to 1.20.2The latest file for its Minecraft version and loader·Forge0.15.30.15.3 · hydrological-1.20.1-0.15.3.jar (main file)·5 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 823.6 KB
    1.21.1 to 1.21.21.21.1 to 1.21.2The latest file for its Minecraft version and loader·NeoForge1.3.21.3.2 · hydrol-1.21.1-1.3.2.jar (main file)·5 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 842.3 KB
    1.21.11The latest file for its Minecraft version and loader·NeoForge1.3.21.3.2 · hydrol-1.21.11-1.3.2.jar (main file)·5 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 901.2 KB
    1.21.11·NeoForge1.3.11.3.1 · hydrol-1.21.11-1.3.1.jar (main file)·5 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 901.2 KB
    1.21.11·NeoForge1.3.01.3.0 · hydrol-1.21.11-1.3.0.jar (main file)·3 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 900.8 KB
    1.21.1 to 1.21.21.21.1 to 1.21.2·NeoForge1.3.01.3.0 · hydrol-1.21.1-1.3.0.jar (main file)·3 Jul 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 842.7 KB
    1.20.1 to 1.20.21.20.1 to 1.20.2·Forge0.15.20.15.2 · hydrological-1.20.1-0.15.2.jar (main file)·30 Jun 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 824.0 KB
    1.21 to 1.21.21.21 to 1.21.2The latest file for its Minecraft version and loader·NeoForge1.2.11.2.1 · hydrol-1.21.x-1.2.1.jar (main file)·30 Jun 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 840.9 KB
    1.21 to 1.21.21.21 to 1.21.2·NeoForge1.2.01.2.0 · hydrol-1.21.x-1.2.0.jar (main file)·28 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 840.9 KB
    1.21.1 to 1.21.21.21.1 to 1.21.2·NeoForge1.1.01.1.0 · hydrol-1.21.x-1.1.0.jar (main file)·24 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 831.1 KB
    1.21.1 to 1.21.21.21.1 to 1.21.2·NeoForge1.0.01.0.0 · hydrol-1.21.x-1.0.0.jar (main file)·21 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 831.0 KB
    1.21 to 1.21.11.21 to 1.21.1·NeoForge0.15.10.15.1 · hydrol-1.21.x-0.15.1.jar (main file)·28 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 809.3 KB
    1.20.1 to 1.20.21.20.1 to 1.20.2·Forge0.15.10.15.1 · hydrological-1.20.1-0.15.1.jar (main file)·28 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 824.5 KB
    1.21.1 to 1.21.21.21.1 to 1.21.2·NeoForge0.15.00.15.0 · hydrol-1.21.x-0.15.0.jar (main file)·27 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 809.3 KB
    1.20.1 to 1.20.21.20.1 to 1.20.2·Forge0.15.00.15.0 · hydrological-1.20.1-0.15.0.jar (main file)·27 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 824.5 KB
    1.20.1 to 1.20.21.20.1 to 1.20.2·Forge0.14.10.14.1 · hydrological-1.20.1-0.14.1.jar (main file)·1 Sep 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 820.2 KB
    1.21.1·NeoForge0.14.10.14.1 · hydrol-1.21.x-0.14.1.jar (main file)·1 Sep 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 805.1 KB
    1.20 to 1.20.41.20 to 1.20.4The latest file for its Minecraft version and loader·Forge0.14.00.14.0 · hydrological-1.20.x-0.14.0.jar (main file)Beta·10 Jun 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 820.2 KB
    1.21.1·NeoForge0.14.00.14.0 · hydro-1.21.1-0.14.0.jar (main file)Beta·9 Jun 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 805.1 KB
    1.21.1·NeoForge0.13.00.13.0 · hydrol-1.21.1-0.13.0.jar (main file)Beta·5 Jun 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 803.3 KB
    1 to 20 of 3612

    Quick fixes

    In the last 2 years, 2 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 1 point.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.2

    • Hydrological 1.21.11-1.3.15 Jul 2026Updated to 1.3.1. - Fixed lava aquifers & redstone spikes not generating…
    • Hydrological 1.20.1-0.15.128 Dec 2025…max leaf distance to 21 from 14. - Fixed leaf decay behaving weirdly. - Palm tree leaves…