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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.

    MobStacker

    Mod

    Combines nearby mobs into stacks to reduce lag and clutter.

    C73/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyGoes online
    • AINone found
    • CompatibilityUp to 26.3
    • ModpacksIn 99
    • ReleasesLatest 18 Oct

    Download

    mobstacker-fabric-26.3-1.26.10.1.jar

    Released 15 Oct 2026 · 510.1 KB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • Fabric APIAMinecraft 26.3 · Fabric (release 0.165.0)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade C

    How grades work

    Strengths

    • Public source code and issue tracker
    • Around for years

    Points lost

    • Many modpacks removed it−10 points
    • Releases replaced within 3 days to fix a problem−7 points
    • Releases in only 6 of the last 24 months−1 point
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      1 point lost26 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.6 days ago (18 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, Quilt and NeoForge, 1.20.4 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 6 of the last 24 months 5 / 6

    • Stability

      17 points lost5 / 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.36 of the 89 modpacks with two or more versions removed it in a later one (40%) See the 36 modpacks0 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.4 of its 10 releases in 2 years needed a quick fix (40%) See the 4 releases0 / 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 · frikinjay/mob-stacker 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · frikinjay/mob-stacker 3 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.108,509 3 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.2.0 years, 62 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 12 latest files for recent Minecraft versions. See Security
    Total73 / 100

    51.5 of the 71 points that apply = 73 out of 100. The points above are rounded to whole numbers.

    Images

    • Maximum Stackage.jpeg

    About

    MobStacker reduces the number of physical entities in mob-dense worlds by automatically combining compatible, similar mobs nearby, helping ease entity-processing, rendering, and network load in vanilla and modded play. Stacks have configurable radius and maximum size, and the mod can combine their health or be set so that killing one member kills the whole stack; by default, the maximum stack size is 16 and one death does not kill the rest. Stacked mobs retain their loot and properties, their displayed names show the stack count, and named mobs are exempt from stacking; bosses receive special handling to preserve custom names and health bars. A configurable mob-cap module can limit spawns by mob category, while entity- and mod-level exclusions let server operators choose what can stack. When enabled, a separator item can split stacks, and an assimilator item can toggle whether mobs are stackable; both features have configurable item and consumption settings.

    Written from Modrinth and CurseForge . How we write it

    In-game changes

    Changes the game's code in 2 areas: Mobs and their behaviorChanges 14 game code files in this area: mobs, animals, villagers, projectiles and how they move and act. and PlayerChanges 1 game code file in this area: your character: movement, abilities, hunger and controls..

    A library packed inside it changes 6 more game code files: Dungeon Config.

    Adds 1 key binding: Open Dungeon Configs.

    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
    Let Me DespawnAsparkASodium Dynamic LightsCBadOptimizationsAAmendmentsA

    Details

    Creator
    frikinjay
    License
    GNU Lesser General Public License v3.0 only
    Downloads
    109K
    Created
    5 Oct 2024
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues

    Security

    No harmful code found

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

    What it can do on your computer

    Starts other programs
    It can start another program on your computer. Only in its files for Fabric 1.21.1, 26.1.2 to 26.3; NeoForge 1.21.1, 26.1.2 to 26.3.
    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 1.21.1, 26.1.2 to 26.3; NeoForge 1.21.1, 26.1.2 to 26.3. See Privacy
    Creates settings files
    The mod keeps its settings in the config folder of your game, where you can change or delete them. 3 files in your config folder.

    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 17 latest files checked, last on 18 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.
      17 latest files: the newest file for each Minecraft version and loader. The answer above is about the 12 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, 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 1 web address 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 12 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 12 files, for recent Minecraft versions. See each file in Releases
    • Address built while the game runsThe code builds this address while the game runs: it is not written in the file.
      Purpose not known.
    • 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
      33 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
      199 code files read

    Compatibility

    See all 62 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.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.
    Fabric APIin some filesALet Me Despawnin some filesAAlmanacin some filesA
    OptionalProjects it can work with but does not need. The author lists them.Nothing
    IncludesProjects packed inside its files.
    Modrinth project 7C0Yf4dyin some files
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.Slower than most mods. On average, it gets a file 255 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 released a new version with this project, each month
    20100
    Oct 2024: 3 modpacksNov 2024: 2 modpacksDec 2024: 3 modpacksJan 2025: 5 modpacksFeb 2025: 3 modpacksMar 2025: 5 modpacksApr 2025: 7 modpacksMay 2025: 11 modpacksJun 2025: 8 modpacksJul 2025: 6 modpacksAug 2025: 6 modpacksSep 2025: 3 modpacksOct 2025: 4 modpacksNov 2025: 2 modpacksDec 2025: 5 modpacksJan 2026: 8 modpacksFeb 2026: 5 modpacksMar 2026: 6 modpacksApr 2026: 4 modpacksMay 2026: 7 modpacksJun 2026: 8 modpacksJul 2026: 6 modpacksAug 2026: 4 modpacksSep 2026: 2 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 20243
    Nov 20242
    Dec 20243
    Jan 20255
    Feb 20253
    Mar 20255
    Apr 20257
    May 202511
    Jun 20258
    Jul 20256
    Aug 20256
    Sep 20253
    Oct 20254
    Nov 20252
    Dec 20255
    Jan 20268
    Feb 20265
    Mar 20266
    Apr 20264
    May 20267
    Jun 20268
    Jul 20266
    Aug 20264
    Sep 20262

    99 modpacks include MobStacker in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Slimes Adventure2.1M downloadslast version with it 18 May 2026Cataclysm Zombie Apocalypse33K downloadslast version with it 14 Sep 2026[Ck7] Pack de Optimización 31K downloadslast version with it 31 Oct 2024Neuroshroud: The Abandoned17K downloadslast version with it 26 Jan 2026TJP - Endless Sky16K downloadslast version with it 4 Nov 2024Easy Create10K downloadslast version with it 8 Jun 2025Penumbralcraft8.9K downloadslast version with it 15 Feb 2025Optimization Ultra8.5K downloadslast version with it 24 Mar 2025Shiner's Mushoku Tensei/Jobless Reincarnation6.7K downloadslast version with it 14 Apr 2025Decently Optimized5.4K downloadslast version with it 25 Nov 2024
    1 to 10 of 30123

    Often in the same modpacks

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

    ProjectTypeShareGrade
    Let Me DespawnAModin 94% of the modpacks with MobStackersparkAModin 64% of the modpacks with MobStackerSodium Dynamic LightsCModin 51% of the modpacks with MobStackerBadOptimizationsAModin 48% of the modpacks with MobStackerAmendmentsAModin 48% of the modpacks with MobStackerTowns and TowersBModin 48% of the modpacks with MobStackerComplementary Shaders - UnboundAShaderin 48% of the modpacks with MobStackerPacket FixerAModin 47% of the modpacks with MobStackerWhat Are They Up To (Watut)BModin 47% of the modpacks with MobStackerAttributeFixAModin 46% of the modpacks with MobStacker
    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, Quilt1.26.10.11.26.10.1 · mobstacker-fabric-26.3-1.26.10.1.jarSends: Nothing about youRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    26.3·NeoForge1.26.10.11.26.10.1 · mobstacker-neoforge-26.3-1.26.10.1.jarSends: Nothing about youRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1.2·Fabric, Quilt1.26.10.11.26.10.1 · mobstacker-fabric-26.1.2-1.26.10.1.jarSends: Nothing about youRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1.2·NeoForge1.26.10.11.26.10.1 · mobstacker-neoforge-26.1.2-1.26.10.1.jarSends: Nothing about youRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.5·Fabric, Quilt1.0.141.0.14 · mobstacker-1.21.5-fabric-1.0.14.jarSends: None foundRequires:Let Me Despawn, AlmanacLet Me Despawn, AlmanacPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.5·NeoForge1.0.141.0.14 · mobstacker-1.21.5-neoforge-1.0.14.jarSends: None foundRequires:Let Me Despawn, AlmanacLet Me Despawn, AlmanacPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.4·Fabric, Quilt1.0.131.0.13 · MobStacker-1.21.4-fabric-1.0.13.jarSends: None foundRequires:Let Me Despawn, AlmanacLet Me Despawn, AlmanacPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.4·NeoForge1.0.131.0.13 · MobStacker-1.21.4-neoforge-1.0.13.jarSends: None foundRequires:Let Me Despawn, AlmanacLet Me Despawn, AlmanacPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1·Fabric, Quilt1.26.10.21.26.10.2 · mobstacker-fabric-1.21.1-1.26.10.2.jarSends: Nothing about youRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1·NeoForge1.26.10.21.26.10.2 · mobstacker-neoforge-1.21.1-1.26.10.2.jarSends: Nothing about youRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1 to 10 of 1712

    62 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1The latest file for its Minecraft version and loader·Fabric, Quilt1.26.10.21.26.10.2 · mobstacker-fabric-1.21.1-1.26.10.2.jar (main file)·18 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthNot on CurseForgeDownload · Stable · 519.2 KB
    1.21.1The latest file for its Minecraft version and loader·NeoForge1.26.10.21.26.10.2 · mobstacker-neoforge-1.21.1-1.26.10.2.jar (main file)·18 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthNot on CurseForgeDownload · Stable · 520.0 KB
    26.4-snapshot-4·Fabric, Quilt1.26.10.11.26.10.1 · mobstacker-fabric-26.4-snapshot-4-1.26.10.1.jar (main file)Beta·15 Oct 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthNot on CurseForgeDownload · Beta · 509.1 KB
    26.3The latest file for its Minecraft version and loader·Fabric, Quilt1.26.10.11.26.10.1 · mobstacker-fabric-26.3-1.26.10.1.jar (main file)·15 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 510.1 KB
    26.3The latest file for its Minecraft version and loader·NeoForge1.26.10.11.26.10.1 · mobstacker-neoforge-26.3-1.26.10.1.jar (main file)·15 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 508.5 KB
    26.1.2The latest file for its Minecraft version and loader·NeoForge1.26.10.11.26.10.1 · mobstacker-neoforge-26.1.2-1.26.10.1.jar (main file)·15 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 509.0 KB
    26.1.2The latest file for its Minecraft version and loader·Fabric, Quilt1.26.10.11.26.10.1 · mobstacker-fabric-26.1.2-1.26.10.1.jar (main file)·15 Oct 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 510.7 KB
    1.21.1·Fabric, Quilt1.26.10.11.26.10.1 · mobstacker-fabric-1.21.1-1.26.10.1.jar (main file)·15 Oct 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 518.5 KB
    1.21.1·NeoForge1.26.10.11.26.10.1 · mobstacker-neoforge-1.21.1-1.26.10.1.jar (main file)·15 Oct 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 519.1 KB
    1.21.5The latest file for its Minecraft version and loader·NeoForge1.0.141.0.14 · mobstacker-1.21.5-neoforge-1.0.14.jar (main file)·9 Apr 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 51.5 KB
    1.21.5The latest file for its Minecraft version and loader·Fabric, Quilt1.0.141.0.14 · mobstacker-1.21.5-fabric-1.0.14.jar (main file)·9 Apr 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 50.5 KB
    1.21 to 1.21.21.21 to 1.21.2The latest file for its Minecraft version and loader·NeoForge1.0.14b1.0.14b · MobStacker-1.21.1-2-neoforge-1.0.14b.jar (main file)·16 Mar 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 60.4 KB
    1.21 to 1.21.21.21 to 1.21.2The latest file for its Minecraft version and loader·Fabric, Quilt1.0.14b1.0.14b · MobStacker-1.21.1-2-fabric-1.0.14b.jar (main file)·16 Mar 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 55.3 KB
    1.20.1 to 1.20.41.20.1 to 1.20.4The latest file for its Minecraft version and loader·Forge1.0.14b1.0.14b · mobstacker-1.20.x-forge-1.0.14b.jar (main file)·16 Mar 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 62.0 KB
    1.20.1 to 1.20.41.20.1 to 1.20.4The latest file for its Minecraft version and loader·Fabric, Quilt1.0.14b1.0.14b · mobstacker-1.20.x-fabric-1.0.14b.jar (main file)·16 Mar 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 55.7 KB
    1.20.1 to 1.20.41.20.1 to 1.20.4·Forge1.0.141.0.14 · mobstacker-1.20.x-forge-1.0.14.jar (main file)·14 Mar 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 62.0 KB
    1.20.1 to 1.20.41.20.1 to 1.20.4·Fabric, Quilt1.0.141.0.14 · mobstacker-1.20.x-fabric-1.0.14.jar (main file)·14 Mar 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 55.7 KB
    1.21 to 1.21.21.21 to 1.21.2·NeoForge1.0.141.0.14 · MobStacker-1.21.1-2-neoforge-1.0.14.jar (main file)·14 Mar 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 60.4 KB
    1.21 to 1.21.21.21 to 1.21.2·Fabric, Quilt1.0.141.0.14 · MobStacker-1.21.1-2-fabric-1.0.14.jar (main file)·14 Mar 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 55.3 KB
    1.21 to 1.21.21.21 to 1.21.2·NeoForge1.0.131.0.13 · MobStacker-1.21.1-2-neoforge-1.0.13.jar (main file)·29 Dec 2024PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 60.1 KB
    1 to 20 of 621234

    Quick fixes

    In the last 2 years, 4 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 7 points.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.4

    • 1.26.10.218 Oct 2026Fixed - Bundles Dungeon Config 1.26.10.3: opening Options…
    • 1.0.14b16 Mar 2025hotfix (all mobs should stack as usual now)
    • 1.0.127 Nov 2024…in clutch, its like theyre watching me) - fixed issues with assimilator item - separator item and…
    • 1.0.115 Nov 2024fixed experience drops