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    2,053,304 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 2026.269,472 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.

    Spawn Balance Utility

    Mod

    Balance which creatures appear in each biome and how often.

    B82/ 100
    • OverviewB
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21.11
    • ModpacksIn 701
    • ReleasesLatest Dec 2025

    Download

    fabric-release-spawnbalanceutility-1.21.5-11.jar

    Released 16 Dec 2025 · 98.9 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

    • Security checks passed
    • Public source code and issue tracker
    • Widely used

    Points lost

    • No release in 10 months−8 points
    • Some modpacks removed it−3 points
    • Releases in only 5 of the last 24 months−2 points
    All 11 criteria

    • Maintenance

      7 points lost20 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.10 months ago (30 Dec 2025). 96 modpacks released in the last 6 months still include it, so it keeps 59% of these points. 7 / 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 Forge and Fabric. 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 5 of the last 24 months 4 / 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.66 of the 371 modpacks with two or more versions removed it in a later one (18%) See the 66 modpacks7 / 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 10 releases in 2 years needed a quick fix (10%) 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.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 · mactso/SpawnBalanceUtility 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · mactso/SpawnBalanceUtility 3 / 3

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.8,822,918 4 / 4

    • Track record

      3 points lost5 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.5.4 years, 43 releases 5 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 10 latest files for recent Minecraft versions. See Security
    Total82 / 100

    58 of the 71 points that apply = 82 out of 100.

    Images

    • Fabric 1.18.2 Structure Test v12.02
    • Eye on the Skys!
    • Twilight Kobold Explorers
    • Magma in the Desert
    • Ghast Armageddon
    • Dragons Galore
    • SBU LoRes Banner

    About

    Spawn Balance Utility helps players, server operators, mod developers, and modpack designers inspect and rebalance mob spawning when vanilla and modded creatures compete for spawn opportunities. It reports spawn weights by biome and lets users adjust each mob’s weight and group-size range, making creatures more or less common or adding them to biomes where they do not normally appear, as long as the mob’s own spawning requirements are met. Users can edit the generated CSV-style reports to make targeted changes, such as reducing skeletons across biomes while increasing them in forests, or use a mass-addition file to introduce selected mobs across all, Overworld, Nether, or End biomes. The mod can also add mobs to Minecraft structures, with examples including fish in shipwrecks and peaceful fish in underwater monuments; support for adding mobs to modded structures is limited by how those structures handle spawning. Optional automatic balancing clamps spawn weights to configurable minimum and maximum values, and can restore Zombified Piglins and Ghasts to Nether biomes that lack them. These changes affect the mix and frequency of mobs, not the spawn cap or hard-coded limits such as spawn times and per-chunk restrictions.

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

    In-game changes

    Does not change the game's code directly.

    Adds no new blocks, items or other content.

    Keeps all of vanilla Minecraft's textures, models and sounds.

    Often used with it

    See all 30
    AttributeFixABlueprintAServer Performance - Smooth Chunk SaveAsparkAConnectivityA

    Details

    Creators
    Two Guys and gzamerath
    License
    Not known
    Downloads
    8.8M
    Created
    15 Jun 2021
    Official page
    CurseForge
    Links
    Source code

    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 Forge 1.20 to 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 21 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.
      21 latest files: the newest file for each Minecraft version and loader. The answer above is about the 10 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
    • 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 10 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 10 files, for recent Minecraft versions. See each file in Releases

    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 · 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.
      Not on Modrinth.
    • 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
      32 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
      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
      21 code files read

    Compatibility

    See all 43 files
    Fabric
    Forge
    1.161.191.2126.1

    Point at or tap a version to see its loaders.

    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
    60300
    Oct 2024: 31 modpacksNov 2024: 40 modpacksDec 2024: 32 modpacksJan 2025: 30 modpacksFeb 2025: 29 modpacksMar 2025: 30 modpacksApr 2025: 36 modpacksMay 2025: 34 modpacksJun 2025: 41 modpacksJul 2025: 43 modpacksAug 2025: 37 modpacksSep 2025: 36 modpacksOct 2025: 43 modpacksNov 2025: 42 modpacksDec 2025: 52 modpacksJan 2026: 54 modpacksFeb 2026: 43 modpacksMar 2026: 56 modpacksApr 2026: 42 modpacksMay 2026: 38 modpacksJun 2026: 36 modpacksJul 2026: 38 modpacksAug 2026: 37 modpacksSep 2026: 23 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 202431
    Nov 202440
    Dec 202432
    Jan 202530
    Feb 202529
    Mar 202530
    Apr 202536
    May 202534
    Jun 202541
    Jul 202543
    Aug 202537
    Sep 202536
    Oct 202543
    Nov 202542
    Dec 202552
    Jan 202654
    Feb 202643
    Mar 202656
    Apr 202642
    May 202638
    Jun 202636
    Jul 202638
    Aug 202637
    Sep 202623

    701 modpacks include Spawn Balance Utility in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Crazy Craft Updated4.5M downloadslast version with it 18 Oct 2026Beyond Depth3.4M downloadslast version with it 18 Oct 2026Fear Nightfall: Remains of Chaos2.9M downloadslast version with it 26 Oct 2024Medieval MC [FORGE] MMC11.8M downloadslast version with it 30 Jul 2021Demon Slayers Unleashed1.6M downloadslast version with it 30 Jun 2022Linggango - [V6.5 IS OUT]1.3M downloadslast version with it 30 Apr 2026MineColonies: Dimensional Adventure1.2M downloadslast version with it 2 Aug 2024Legendary Edition1.2M downloadslast version with it 16 Jul 2025Soulrend - Dark Fantasy RPG Soulslike1.1M downloadslast version with it 15 Dec 2025Chocolate Edition Minecraft1.1M downloadslast version with it 4 May 2026
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with Spawn Balance Utility. Share: how many of the modpacks with Spawn Balance Utility also have that mod.

    ProjectTypeShareGrade
    AttributeFixAModin 62% of the modpacks with Spawn Balance UtilityBlueprintAModin 60% of the modpacks with Spawn Balance UtilityServer Performance - Smooth Chunk SaveAModin 57% of the modpacks with Spawn Balance UtilitysparkAModin 54% of the modpacks with Spawn Balance UtilityConnectivityAModin 54% of the modpacks with Spawn Balance UtilityAI Improvements: Performance TuningAModin 54% of the modpacks with Spawn Balance UtilityBetter Fps - Render DistanceBModin 52% of the modpacks with Spawn Balance UtilityYUNG's Better Nether FortressesAModin 48% of the modpacks with Spawn Balance UtilityFastSuiteAModin 46% of the modpacks with Spawn Balance UtilityYUNG's Better Ocean MonumentsAModin 45% of the modpacks with Spawn Balance Utility
    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
    1.21.5 to 1.21.11·Fabric1111 · fabric-release-spawnbalanceutility-1.21.5-11.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·Forge61.13.961.13.9 · Forge-SpawnBalanceUtility-1.21.11-61.13.9.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.9 to 1.21.10·Forge59.13.959.13.9 · Forge-SpawnBalanceUtility-1.21.9-59.13.9.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.6 to 1.21.8·Forge56.13.956.13.9 · spawnbalanceutility-1.21.6-56.13.9.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.5·Forge55.13.855.13.8 · spawnbalanceutility-1.21.5-55.13.8.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.4·Fabric55 · fabric-release-spawnbalanceutility-1.21.4-5.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1 to 1.21.3·Fabric55 · fabric-release-spawnbalanceutility-1.21.1-5.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1·Forge52.13.852.13.8 · spawnbalanceutility-1.21.1-52.13.8.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20 to 1.20.6·Fabric12.212.2 · fabric-release-spawnbalanceutility-1.20-12.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20 to 1.20.6·Forge46.13.746.13.7 · spawnbalanceutility-1.20-46.13.7.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1 to 10 of 21123

    43 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.9 to 1.21.101.21.9 to 1.21.10The latest file for its Minecraft version and loader·Forge59.13.959.13.9 · Forge-SpawnBalanceUtility-1.21.9-59.13.9.jar·30 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 78.1 KB
    1.21.11The latest file for its Minecraft version and loader·Forge61.13.961.13.9 · Forge-SpawnBalanceUtility-1.21.11-61.13.9.jar·30 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 78.3 KB
    1.21.5 to 1.21.111.21.5 to 1.21.11The latest file for its Minecraft version and loader·Fabric1111 · fabric-release-spawnbalanceutility-1.21.5-11.jar·16 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 98.9 KB
    1.21.5 to 1.21.111.21.5 to 1.21.11·Fabric1010 · fabric-release-spawnbalanceutility-1.21.5-10.jar·15 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 99.5 KB
    1.21.5 to 1.21.101.21.5 to 1.21.10·Fabric99 · fabric-release-spawnbalanceutility-1.21.5-9.jar·30 Nov 2025PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 95.4 KB
    1.21.6 to 1.21.81.21.6 to 1.21.8The latest file for its Minecraft version and loader·Forge56.13.956.13.9 · spawnbalanceutility-1.21.6-56.13.9.jar·13 Nov 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 85.7 KB
    1.21.1 to 1.21.31.21.1 to 1.21.3The latest file for its Minecraft version and loader·Fabric55 · fabric-release-spawnbalanceutility-1.21.1-5.jar·13 Nov 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 84.5 KB
    1.21.5-Snapshot·Forge1.21.5-55.13.91.21.5-55.13.9 · spawnbalanceutility-1.21.5-55.13.9.jar·13 Nov 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 86.1 KB
    1.21.4The latest file for its Minecraft version and loader·Fabric55 · fabric-release-spawnbalanceutility-1.21.4-5.jar·13 Nov 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 84.3 KB
    1.21.6 to 1.21.81.21.6 to 1.21.8·Forge56.13.856.13.8 · spawnbalanceutility-1.21.6-56.13.8.jar·24 Jul 2025PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 85.8 KB
    1.21.5The latest file for its Minecraft version and loader·Forge55.13.855.13.8 · spawnbalanceutility-1.21.5-55.13.8.jar·24 Jul 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 86.1 KB
    1.21.1The latest file for its Minecraft version and loader·Forge52.13.852.13.8 · spawnbalanceutility-1.21.1-52.13.8.jar·24 Jul 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 64.3 KB
    1.20 to 1.20.61.20 to 1.20.6The latest file for its Minecraft version and loader·Fabric12.212.2 · fabric-release-spawnbalanceutility-1.20-12.2.jar·31 May 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 86.3 KB
    1.20 to 1.20.61.20 to 1.20.6The latest file for its Minecraft version and loader·Forge46.13.746.13.7 · spawnbalanceutility-1.20-46.13.7.jar·31 May 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 65.2 KB
    1.21.4·Fabric44 · fabric-release-spawnbalanceutility-1.21.4-4.jar·27 Mar 2025PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 84.8 KB
    1.21.1·Fabric44 · fabric-release-spawnbalanceutility-1.21.1-4.jar·27 Mar 2025PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 84.6 KB
    1.20 to 1.20.51.20 to 1.20.5·Forge46.13.646.13.6 · spawnbalanceutility-1.20-46.13.6.jar·30 Aug 2024PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 64.6 KB
    1.16.3 to 1.16.51.16.3 to 1.16.5The latest file for its Minecraft version and loader·Forge36.13.336.13.3 · SpawnBalanceUtility-36.13.3.jar·7 Aug 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 37.2 KB
    1.20.1 to 1.20.51.20.1 to 1.20.5·Forge1.20-46.13.51.20-46.13.5 · spawnbalanceutility-1.20-46.13.5.jar·12 Jun 2024PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 64.5 KB
    1.20.1 to 1.20.41.20.1 to 1.20.4·Forge1.20-46.13.31.20-46.13.3 · spawnbalanceutility-1.20-46.13.3.jar·14 Dec 2023PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 48.3 KB
    1 to 20 of 43123

    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

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.1

    • fabric-release-spawnbalanceutility-1.21.5-11.jar16 Dec 2025Version 11 Fixes of the Summary function that produces…