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    2,059,027 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 25 Oct 2026.641,484 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 25 Oct 2026.269,688 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.

    William Wythers' Overhauled Overworld

    Mod

    Explore familiar biomes with varied landscapes and smaller sub-biomes.

    Download

    Files come from Modrinth and CurseForge servers.

    wwoo-fabric-26.3-3.0.1.jar Beta

    Released 16 Sep 2026 · 5.3 MB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • Fabric APIAMinecraft 26.3 · Fabric (release 0.165.0)
    • Cristel LibAMinecraft 26.3 · Fabric (release 3.1.13)
    B80/ 100
    Security
    Passed
    Privacy
    None found
    Runs on
    Server, client optional
    Loaders
    Fabric, Forge, NeoForge, Quilt
    Minecraft versions
    Up to 26.3
    • OverviewB
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 26.3
    • ModpacksIn 1,959
    • ReleasesLatest 16 Sep
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

    • Security checks passed
    • Regular releases for the newest Minecraft versions
    • Widely used
    • Around for years

    Points lost

    • No source code link−7 points
    • Many modpacks removed it−4 points
    • No public issue tracker−3 points
    All 11 criteria

    • Maintenance

      Full points27 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.6 weeks ago (16 Sep 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.26.3 (latest) on Fabric, NeoForge and Quilt, 1.21 on Forge 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

      4 points lost18 / 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.80 of the 347 modpacks with two or more versions removed it in a later one (23%) See the 80 modpacks6 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.1 of its 18 releases in 2 years needed a quick fix (6%) 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.3 of 3 known conflicts count in the grade See the 3 known conflicts5 / 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

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.8,175,286 4 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.3.0 years, 35 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 15 latest files for recent Minecraft versions. See Security
    Total80 / 100

    56.6 of the 71 points that apply = 80 out of 100. The points above are rounded to whole numbers.

    Images

    • Sparse Jungle
    • Swamp
    • Sunflower Plains
    • Banyan Trees
    • Navigable Rivers
    • Bulrush Swamps
    • Montane Groves
    • Taiga Clearings
    • Boreal Forests
    • Autumnal Forests
    • Tropical Atolls
    • Geothermal Activity
    • Spanish Moss
    • Danakil Desert
    • Lowland Rainforest
    • Cherry Grove
    • Biome Transition

    About

    William Wythers' Overhauled Overworld reworks vanilla biomes and adds sub-biomes to make familiar landscapes feel more realistic and atmospheric, while staying focused on vanilla biomes rather than adding a separate set of new biomes. Its landscapes include examples such as montane groves, taiga clearings, boreal and autumnal forests, tropical atolls, the Danakil Desert, and lowland rainforest. The mod also smooths transitions between biomes, so environments change more naturally instead of shifting abruptly. Optional configured features include navigable rivers, revised coastlines through Cliffs and Coves, and the adventurous terrain of Towering Tepuis. Because it uses vanilla blocks, the mod can be used on a server with vanilla clients joining.

    Written from Modrinth and CurseForge . How we write it

    In-game changes

    Does not change the game's code directly.

    Adds no new blocks, items or other content.

    Replaces 105 of vanilla Minecraft's world generation files, 21 other data files and 3 tags.

    Details

    Creators
    Cristelknight and WilliamWythers
    License
    Creative Commons Attribution Non Commercial No Derivatives 4.0 International
    Downloads
    8.2M
    Created
    8 Oct 2023
    Official pages
    Modrinth , CurseForge
    Links
    Discord

    Security

    No harmful code found

    We checked its files and read their code, without running it.

    What it can do on your computer

    Connects to the internet
    It has code that can go online, for example to check for updates, load skins or send crash reports. Only in its files for Fabric 1.21.5 to 1.21.8. See Privacy

    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 15 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.
      18 latest files: the newest file for each Minecraft version and loader. The answer above is about the 15 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.
      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 15 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 15 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 and images 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 · 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.
    • 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
      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
      8 code files read

    Compatibility

    See all 35 files
    Fabric
    NeoForge
    Forge
    Quilt
    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.
    Fabric APIin some filesACristel Libin some filesA
    OptionalProjects it can work with but does not need. The author lists them.
    Fabric APIin some filesA
    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.About as fast as most mods. On average, it gets a file 38 days after a new Minecraft version comes out. Measured on the last 6 Minecraft versions.

    Known conflicts

    These projects do not work together with William Wythers' Overhauled Overworld: their authors or William Wythers' Overhauled Overworld's author say so. If you install both, the game can crash or some features can stop working. Some of them do the same job as William Wythers' Overhauled Overworld, so you only need one.

    ProjectTypeDownloadsDeclared by
    William Wythers' Expanded EcosphereMod6.3M downloadsdeclared by William Wythers' Expanded EcosphereBig GlobeMod855K downloadsdeclared by Big GlobeWorld-GenMod28K downloadsdeclared by World-Gen

    Related projects

    Projects that need William Wythers' Overhauled Overworld to work.

    ProjectTypeDownloadsGrade
    Dungeon Train: A Lore-Rich Roguelite RPG AdventureAMod125K downloads

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    2001000
    Oct 2024: 68 modpacksNov 2024: 83 modpacksDec 2024: 74 modpacksJan 2025: 84 modpacksFeb 2025: 84 modpacksMar 2025: 102 modpacksApr 2025: 117 modpacksMay 2025: 131 modpacksJun 2025: 128 modpacksJul 2025: 118 modpacksAug 2025: 96 modpacksSep 2025: 86 modpacksOct 2025: 95 modpacksNov 2025: 112 modpacksDec 2025: 146 modpacksJan 2026: 179 modpacksFeb 2026: 178 modpacksMar 2026: 143 modpacksApr 2026: 132 modpacksMay 2026: 145 modpacksJun 2026: 116 modpacksJul 2026: 125 modpacksAug 2026: 136 modpacksSep 2026: 127 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 202468
    Nov 202483
    Dec 202474
    Jan 202584
    Feb 202584
    Mar 2025102
    Apr 2025117
    May 2025131
    Jun 2025128
    Jul 2025118
    Aug 202596
    Sep 202586
    Oct 202595
    Nov 2025112
    Dec 2025146
    Jan 2026179
    Feb 2026178
    Mar 2026143
    Apr 2026132
    May 2026145
    Jun 2026116
    Jul 2026125
    Aug 2026136
    Sep 2026127

    1,959 modpacks include William Wythers' Overhauled Overworld in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Better Adventures+2.2M downloadslast version with it 23 Jul 2025Legendary Edition1.2M downloadslast version with it 16 Jul 2025Soulrend - Dark Fantasy RPG Soulslike1.1M downloadslast version with it 21 Oct 2026Cobblemon - Star Academy (Legacy)735K downloadslast version with it 9 Sep 2025Cobblemon Academy 2.0524K downloadslast version with it 23 Sep 2026Monifactory453K downloadslast version with it 27 Aug 2026JJKL Jujutsu Kaisen Craft436K downloadslast version with it 7 Jun 2025Cobblemon Academy (Legacy)416K downloadslast version with it 8 Jan 2026命运齿轮FOM机械动力航空学【Fate's Machinery】405K downloadslast version with it 28 Mar 2025Alaskan Wilderness364K downloadslast version with it 29 Apr 2025
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with William Wythers' Overhauled Overworld. Share: how many of the modpacks with William Wythers' Overhauled Overworld also have that mod.

    ProjectTypeShareGrade
    AmendmentsAModin 47% of the modpacks with William Wythers' Overhauled OverworldsparkAModin 42% of the modpacks with William Wythers' Overhauled OverworldTectonicBModin 42% of the modpacks with William Wythers' Overhauled OverworldChat HeadsAModin 41% of the modpacks with William Wythers' Overhauled OverworldYUNG's Better Nether FortressesAModin 40% of the modpacks with William Wythers' Overhauled OverworldComplementary Shaders - UnboundAShaderin 39% of the modpacks with William Wythers' Overhauled OverworldFresh AnimationsAResource packin 39% of the modpacks with William Wythers' Overhauled OverworldLithiumAModin 38% of the modpacks with William Wythers' Overhauled OverworldTowns and TowersBModin 38% of the modpacks with William Wythers' Overhauled OverworldChippedCModin 38% of the modpacks with William Wythers' Overhauled Overworld
    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
    26.3·Fabric, Quilt3.0.13.0.1 · wwoo-fabric-26.3-3.0.1.jarSends: None foundRequires:Fabric API, Cristel LibFabric API, Cristel LibPassedOur checks found nothing harmful in this file. Its code was read too.
    26.3·NeoForge3.0.13.0.1 · wwoo-neoforge-26.3-3.0.1.jarSends: None foundRequires:Cristel LibPassedOur checks found nothing harmful in this file. Its code was read too.
    26.2·Fabric, Quilt2.7.12.7.1 · wwoo-fabric-26.2-2.7.1.jarSends: None foundRequires:Cristel Lib, Fabric APICristel Lib, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    26.2·NeoForge2.7.12.7.1 · wwoo-neoforge-26.2-2.7.1.jarSends: None foundRequires:Cristel LibPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1.2·Fabric, Quilt2.7.02.7.0 · wwoo-fabric-26.1.2-2.7.0.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1.2·NeoForge2.7.02.7.0 · wwoo-neoforge-26.1.2-2.7.0.jarSends: None foundRequires:Cristel LibPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·Fabric, Quilt2.6.42.6.4 · wwoo-fabric-2.6.4.jarSends: None foundRequires:Cristel Lib, Fabric APICristel Lib, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·NeoForge2.6.42.6.4 · wwoo-neoforge-2.6.4.jarSends: None foundRequires:Cristel LibPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.10·Fabric2.6.02.6.0 · wwoo-fabric-2.6.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.10·NeoForge2.6.02.6.0 · wwoo-neoforge-2.6.0.jarSends: None foundRequires:Cristel LibPassedOur checks found nothing harmful in this file. Its code was read too.
    1 to 10 of 1812

    35 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    26.3The latest file for its Minecraft version and loader·NeoForge3.0.13.0.1 · wwoo-neoforge-26.3-3.0.1.jar (main file)Beta·16 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 5.3 MB
    26.3The latest file for its Minecraft version and loader·Fabric, Quilt3.0.13.0.1 · wwoo-fabric-26.3-3.0.1.jar (main file)Beta·16 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 5.3 MB
    26.3·NeoForge3.0.03.0.0 · wwoo-neoforge-26.3-3.0.0.jarBeta·16 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Not on ModrinthOpen this file on CurseForgeDownload · Beta · 5.3 MB
    26.3·Fabric, Quilt3.0.03.0.0 · wwoo-fabric-26.3-3.0.0.jarBeta·16 Sep 2026PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Beta · 5.4 MB
    26.2The latest file for its Minecraft version and loader·Fabric, Quilt2.7.12.7.1 · wwoo-fabric-26.2-2.7.1.jar (main file)Beta·12 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 8.6 MB
    26.2The latest file for its Minecraft version and loader·NeoForge2.7.12.7.1 · wwoo-neoforge-26.2-2.7.1.jar (main file)Beta·12 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 8.5 MB
    26.1.2The latest file for its Minecraft version and loader·NeoForge2.7.02.7.0 · wwoo-neoforge-26.1.2-2.7.0.jar (main file)Beta·16 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 8.5 MB
    26.1.2The latest file for its Minecraft version and loader·Fabric, Quilt2.7.02.7.0 · wwoo-fabric-26.1.2-2.7.0.jar (main file)Beta·16 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 8.5 MB
    1.21.1The latest file for its Minecraft version and loader·NeoForge2.6.72.6.7 · wwoo-neoforge-2.6.7.jar (main file)·28 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.5 MB
    1.21.1The latest file for its Minecraft version and loader·Fabric, Quilt2.6.72.6.7 · wwoo-fabric-2.6.7.jar (main file)·28 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.5 MB
    1.21.1·NeoForge2.6.62.6.6 · wwoo-neoforge-2.6.6.jar (main file)·23 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 8.1 MB
    1.21.1·Fabric, Quilt2.6.62.6.6 · wwoo-fabric-2.6.6.jar (main file)·23 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 8.1 MB
    1.21.1·Fabric2.6.52.6.5 · wwoo-fabric-2.6.5.jar (main file)·22 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 9.4 MB
    1.21.1·NeoForge2.6.52.6.5 · wwoo-neoforge-2.6.5.jar (main file)·22 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 9.4 MB
    1.21.1·Fabric, Quilt2.6.42.6.4 · wwoo-fabric-2.6.4.jar (main file)·21 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 9.4 MB
    1.21.1·NeoForge2.6.42.6.4 · wwoo-neoforge-2.6.4.jar (main file)·21 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 9.4 MB
    1.21.11The latest file for its Minecraft version and loader·Fabric, Quilt2.6.42.6.4 · wwoo-fabric-2.6.4.jar (main file)·25 Mar 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 8.6 MB
    1.21.11The latest file for its Minecraft version and loader·NeoForge2.6.42.6.4 · wwoo-neoforge-2.6.4.jar (main file)·25 Mar 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 8.6 MB
    1.21.11·Fabric2.6.32.6.3 · wwoo-fabric-2.6.3.jar (main file)·12 Feb 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 8.6 MB
    1.21.11·NeoForge2.6.32.6.3 · wwoo-neoforge-2.6.3.jar (main file)·12 Feb 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 8.6 MB
    1 to 20 of 3512

    Quick fixes

    In the last 2 years, 1 release needed a quick fix: a new release within 3 days to fix a problem. This counts in the grade, but it is too few to lose points.

    See them, newest first
    • WWOO 2.6.522 May 2026[2.6.5] fix cliffs and coves add-on option