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    2,054,198 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 2026.269,438 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.

    Just Trial Spawners

    Mod

    Bring trial chambers, their monsters, and rewards to your world.

    B88/ 100
    • OverviewB
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityMinecraft 1.20.1
    • ModpacksIn 4
    • ReleasesLatest 13 Sep

    Download

    justtrialspawners-1.20.1-1.3.0.jar

    Released 13 Sep 2026 · 3.6 MB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • FTB Library (NeoForge)AMinecraft 1.20.1 · Forge (release 2001.2.13)
    • Architectury APIAMinecraft 1.20.1 · Forge (release 9.2.14)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

    • Security checks passed
    • Stable releases
    • Public source code

    Points lost

    • Releases in only 3 of the last 24 months−4 points
    • First release only 6 months ago−3 points
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      4 points lost23 / 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 (13 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.1.20.1 on Forge. 15% or more of the popular mods updated in the last 6 months also have files for 1.20.1. 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 3 of the last 24 months 2 / 6

    • Stability

      Full points22 / 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.1 of its 8 releases in 2 years needed a quick fix (13%) 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 points7 / 7
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · breakinblocks/justtrialspawners 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.Does not apply. CurseForge links are not in our data.

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.147,670 3 / 4

    • Track record

      3 points lost5 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.6 months, 9 releases 5 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in the latest file for recent Minecraft versions. See Security
    Total88 / 100

    59.6 of the 68 points that apply = 88 out of 100. The points above are rounded to whole numbers.

    About

    Just Trial Spawners brings Minecraft 1.21’s Trial Chamber mechanics to Forge worlds, aimed especially at modpack makers, without adding Trial Chamber world generation. Its trial spawners detect nearby players, summon mobs in waves with per-player scaling, and eject rewards when a trial is complete; players can configure the next mob with a spawn egg, and server settings control details such as detection range and cooldown. Players with Bad Omen can trigger ominous mode, which brings tougher mob variants, periodic item drops during the fight, ominous rewards, and access to ominous vaults with upgraded loot. Vaults are opened with Trial Keys, track rewards separately for each player, and have a distinct ominous version activated with an Ominous Trial Key. The mod adds the Breeze, an aerial mob that leaps, slides, and attacks with wind charges, and the Bogged, a skeleton variant that fires poison arrows and can be sheared for mushrooms. Trial-related effects include Trial Omen, which activates ominous mode near a trial spawner, as well as Wind Charged, Weaving, Oozing, and Infested, which cause wind bursts, cobwebs, slimes, or a chance of silverfish when their affected entity dies or is hit. The combat additions include the Density, Breach, and Wind Burst enchantments, which respectively increase damage, bypass armor effectiveness, and trigger a wind burst on hit. Its creative tab includes preconfigured spawners for more than 36 hostile mobs, including zombies, creepers, Endermen, ravagers, wardens, Breeze, and Bogged, while resource packs can provide custom spawner and vault appearances, including state-specific variants.

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

    In-game changes

    Changes the game's code in 1 area: Chunk loading and storageChanges 1 game code file in this area: how the game loads, tracks, saves and unloads chunks..

    Adds 2 blocks, 7 items, 2 mobs, 2 projectiles, 3 enchantments, 1 recipe, 16 loot tables and 35 sounds.

    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
    Saereth
    License
    Not known
    Downloads
    148K
    Created
    10 Apr 2026
    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.

    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 · The latest file 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.
      1 latest file, for a recent version. 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 · Its one file 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 its one file, for recent Minecraft versions. See each file in Releases

    AI

    No sign so far that AI was used to make it

    We looked for AI tools in its texts, files, images and sounds 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.
      Not on Modrinth.
    • 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
      18 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
      43 images read
    • Sounds in its filesThe tags of the sound files in the files you download, where some AI music tools write their name.
      Nothing found
      40 of 117 sounds 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
      74 code files read

    Compatibility

    See all 9 files
    Forge
    1.201.2126.126.3

    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.
    FTB Library (NeoForge)AArchitectury APIA
    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 1.20.1. Many recently updated mods still support 1.20.1.

    Modpacks using this project

    Find modpacks with it

    Modpacks that include Just Trial Spawners in at least one of their versions, most downloaded first.

    ModpackDownloadsLast version with it
    FTB Presents Architect's Exodus166K downloadslast version with it 23 Oct 2026Donna's Odyssey Fantasy RPG2.6K downloadslast version with it 30 Aug 2026Curse of Craftylvania713 downloadslast version with it 13 Oct 2026WIP Triumph of Enlightment 462 downloadslast version with it 4 Jul 2026

    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
    1.20.1·Forge1.3.01.3.0 · justtrialspawners-1.20.1-1.3.0.jarSends: None foundRequires:FTB Library (NeoForge), Architectury APIFTB Library (NeoForge), Architectury APIPassedOur checks found nothing harmful in this file. Its code was read too.

    9 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.1The latest file for its Minecraft version and loader·Forge1.3.01.3.0 · justtrialspawners-1.20.1-1.3.0.jar·13 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 3.6 MB
    1.20.1·Forge1.2.31.2.3 · justtrialspawners-1.20.1-1.2.3.jar·9 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 3.6 MB
    1.20.1·Forge1.2.21.2.2 · justtrialspawners-1.20.1-1.2.2.jar·9 Sep 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 3.6 MB
    1.20.1·Forge1.2.11.2.1 · justtrialspawners-1.20.1-1.2.1.jar·22 May 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 3.6 MB
    1.20.1·Forge1.2.01.2.0 · justtrialspawners-1.20.1-1.2.0.jar·22 May 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 3.6 MB
    1.20.1·Forge1.1.21.1.2 · justtrialspawners-1.20.1-1.1.2.jar·18 May 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 3.6 MB
    1.20.1·Forge1.1.11.1.1 · justtrialspawners-1.20.1-1.1.1.jar·6 May 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 3.6 MB
    1.20.1·Forge1.1.01.1.0 · justtrialspawners-1.20.1-1.1.0.jar·11 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 3.6 MB
    1.20.1·Forge1.0.01.0.0 · justtrialspawners-1.20.1-1.0.0.jar·10 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 3.6 MB

    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

    • justtrialspawners 1.20.1-1.1.011 Apr 2026…to rewrite chunk NBT before deserialization to fix block palette resolution Block palette…