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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.
    How it worksMalware we foundAPIAboutPrivacyTermsContact

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

    One Block

    Mod

    One block reappears with new rewards as you break it.

    A96/ 100
    • OverviewA
    • SecurityPassed
    • PrivacyGoes online
    • AIAI images
    • CompatibilityUp to 26.3
    • ModpacksIn 13
    • ReleasesLatest 8 Oct

    Download

    oneblock-5.1.6-fabric+26.3.jar

    Released 8 Oct 2026 · 2.2 MB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • CodxLibCMinecraft 26.3 · Fabric (release 1.6.1)
    • Fabric APIAMinecraft 26.3 · Fabric (release 0.165.0)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade A

    How grades work

    Strengths

    • Security checks passed
    • Regular releases for the newest Minecraft versions
    • Public source code and issue tracker
    • Around for years

    Points lost

    • Releases replaced within 3 days to fix a problem−2 points
    • Under 5 million downloads−1 point
    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.2 weeks ago (8 Oct 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 and NeoForge, 26.2 on Forge, 26.1.2 on Quilt 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 14 of the last 24 months 6 / 6

    • Stability

      2 points lost20 / 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.1 of the 4 modpacks with two or more versions removed it in a later one (25%) 10 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.10 of its 49 releases in 2 years needed a quick fix (20%) See the 10 releases5 / 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

      Full points10 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · 2Lynk/OneBlock 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · 2Lynk/OneBlock 3 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.798,859 3 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.2.8 years, 706 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 45 latest files for recent Minecraft versions. See Security
    Total96 / 100

    68.1 of the 71 points that apply = 96 out of 100. The points above are rounded to whole numbers.

    Images

    • Dialog
    • Initial start
    • Incoming monster wave
    • Admin menu
    • A final warning!
    • Monster wave spawned
    • The One Block in the End dimension

    About

    OneBlock turns survival into a void-island progression challenge: players begin with a regenerating block, and each break produces a new block while advancing the pool from basic materials toward harder and rarer resources. Breaking the block can also bring item or chest drops, plant growth, friendly visitors, or hostile mob waves; waves can grow in size and difficulty as play progresses. The surrounding biome can change by progression, weighted selection, fixed break milestones, or player vote, and can influence which blocks and mobs appear. Players can configure custom weighted drop tables and unlock entries by break count or tier, while also tailoring biome changes and mob waves to set their timing, size, mobs, and applicable biomes. Breaks may open portals to private structure dungeons, including woodland mansions, ocean monuments, desert pyramids, jungle temples, strongholds, Nether fortresses, villages, and pillager outposts; each has a matching biome, a bounded area, and a return portal. Multiplayer can provide a separate island for each player, with configurable island spacing, individual or shared break counts, island access rules, and a leaderboard. An in-game admin menu and commands manage the experience, while settings can also be edited in a JSON file with a visual web editor; progress text and optional tab-list counts help players track their run.

    Written from Modrinth and the GitHub README . How we write it

    In-game changes

    Changes the game's code in 4 areas: Mobs and their behaviorChanges 2 game code files in this area: mobs, animals, villagers, projectiles and how they move and act., Server and world logicChanges 2 game code files in this area: the world, commands, scoreboards, saved data and game rules., World generationChanges 1 game code file in this area: terrain, biomes and structures made when new land is created. and Game coreChanges 1 game code file in this area: the main loop, lighting and other code the whole game uses..

    Adds 1 block: Condensed Dirt; 1 dimension: Overworld; 4 recipes.

    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
    Codx
    License
    Creative Commons Attribution Non Commercial 4.0 International
    Downloads
    799K
    Created
    22 Dec 2023
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues , Wiki , 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 Fabric 1.20.1 to 26.3; NeoForge 1.21.1 to 26.3; Forge 1.20.1 to 26.2.
    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 Quilt 1.21.11 to 26.1.2. 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 62 latest files checked, last on 17 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.
      62 latest files: the newest file for each Minecraft version and loader. The answer above is about the 45 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 about you

    We read its code without running it: it contacts 2 web addresses while you play.

    Like any connection, each address it contacts sees your IP address.

    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 45 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 45 files, for recent Minecraft versions. See each file in Releases
    • api.modrinth.com
      Checks for a new version of the mod.
    • Address built while the game runsThe code builds this address while the game runs: it is not written in the file.
      Checks for a new version of the mod.
    • 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

    AI was used for its images

    ChatGPT is named in the images in its files.

    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
      21 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.
      An image names ChatGPT in its image metadata icon.png
    • 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
      120 code files read

    Compatibility

    See all 706 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.Works in your game or on the server. Players can join without it.
    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.
    CodxLibon Fabric, NeoForge and ForgeCFabric APIin some filesA
    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.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.

    Modpacks using this project

    Find modpacks with it

    Modpacks that include One Block in at least one of their versions, most downloaded first.

    ModpackDownloadsLast version with it
    One Block ModPack134K downloadslast version with it 30 Nov 2025One Block Challenge59K downloadslast version with it 2 Aug 2026One Block Original40K downloadslast version with it 10 Jan 2026One Block Horror27K downloadslast version with it 5 Dec 2025Verity One Block17K downloadslast version with it 2 Aug 2026One Block Hardcore9.4K downloadslast version with it 3 Jan 2026United Empires7.6K downloadslast version with it 11 Apr 2025OneBlock Horror SkyBlock6.1K downloadslast version with it 24 Aug 2026One Block Gravity Changer1.9K downloadslast version with it 15 Feb 2026Custom OneBlock383 downloadslast version with it 4 Oct 2026
    1 to 10 of 1312

    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·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+26.3.jarSends: None foundRequires:CodxLib, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    26.3·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+26.3.jarSends: None foundRequires:CodxLibPassedOur checks found nothing harmful in this file. Its code was read too.
    26.2·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+26.2.jarSends: None foundRequires:CodxLib, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    26.2·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+26.2.jarSends: None foundRequires:CodxLibPassedOur checks found nothing harmful in this file. Its code was read too.
    26.2·Forge5.1.65.1.6 · oneblock-5.1.6-forge+26.2.jarSends: None foundRequires:CodxLibPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1.2·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+26.1.2.jarSends: None foundRequires:CodxLib, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1.2·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+26.1.2.jarSends: None foundRequires:CodxLibPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1.2·Forge5.1.65.1.6 · oneblock-5.1.6-forge+26.1.2.jarSends: None foundRequires:CodxLibPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1 to 26.1.2·Quilt3.0.13.0.1 · oneblock-fabric-26.1.2-3.0.1.jarSends: Nothing about youRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1.1·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+26.1.1.jarSends: None foundRequires:CodxLib, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1 to 10 of 6212345…7

    706 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.6The latest file for its Minecraft version and loader·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+1.20.6.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.3The latest file for its Minecraft version and loader·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+26.3.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.2The latest file for its Minecraft version and loader·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+26.2.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.2The latest file for its Minecraft version and loader·Forge5.1.65.1.6 · oneblock-5.1.6-forge+26.2.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.2The latest file for its Minecraft version and loader·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+26.2.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.1.2The latest file for its Minecraft version and loader·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+26.1.2.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.1.2The latest file for its Minecraft version and loader·Forge5.1.65.1.6 · oneblock-5.1.6-forge+26.1.2.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.1.2The latest file for its Minecraft version and loader·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+26.1.2.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.1.1The latest file for its Minecraft version and loader·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+26.1.1.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.1.1The latest file for its Minecraft version and loader·Forge5.1.65.1.6 · oneblock-5.1.6-forge+26.1.1.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.1.1The latest file for its Minecraft version and loader·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+26.1.1.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.1The latest file for its Minecraft version and loader·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+26.1.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.1The latest file for its Minecraft version and loader·Forge5.1.65.1.6 · oneblock-5.1.6-forge+26.1.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    26.1The latest file for its Minecraft version and loader·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+26.1.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.21.11The latest file for its Minecraft version and loader·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+1.21.11.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.21.11The latest file for its Minecraft version and loader·Forge5.1.65.1.6 · oneblock-5.1.6-forge+1.21.11.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.21.11The latest file for its Minecraft version and loader·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+1.21.11.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.21.10The latest file for its Minecraft version and loader·NeoForge5.1.65.1.6 · oneblock-5.1.6-neoforge+1.21.10.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.21.10The latest file for its Minecraft version and loader·Forge5.1.65.1.6 · oneblock-5.1.6-forge+1.21.10.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.21.10The latest file for its Minecraft version and loader·Fabric5.1.65.1.6 · oneblock-5.1.6-fabric+1.21.10.jar (main file)·8 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1 to 20 of 70612345…36

    Quick fixes

    In the last 2 years, 10 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 2 points.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.10

    • 5.1.0+26.2-fabric15 Aug 2026…show an entry's biomes on its tooltip. Fixes - /oneblock export (and Export For Website) no…
    • 4.0.0+26.2-neoforge7 Aug 2026…and dictionary edits are operator-only. - Fixes: modded blocks no longer spawn waterlogged (no more…
    • 3.1.114 Jun 2026…Bugfix: starter island no longer respawns Fixed a bug where the starting island could regenerate out of…
    • 2.3.315 Dec 2025Fixed a bug with /votebiome not working properly and switching…
    • 2.3.028 Nov 2025…in tab. Configurable via the admin panel. Fixes - Duplicate item drops - CODEC limit (split config)…
    • 2.2.126 Nov 2025Small fix where the item spawn will now spawn with 0 velocity so it…
    • 2.2.226 Nov 2025…change hostile mob and friendly spawn radius - Fixed a check that if the One Block is not at its place longer…
    • 2.1.210 Nov 20252.1.2 - Minor fix, made it so that only one creeper can spawn at a time…
    • 2.0.226 Oct 20252.0.2 - Fixed gravity blocks spawning (gravel, sand etc) - Fixed that…
    • 2.0.124 Oct 2025Fixed the datapack versions being too low and thus giving an…