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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.
    How it worksMalware we foundAPIAboutPrivacyTermsContact

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

    YTech

    Mod

    Improves early game by increasing time to reach iron age using prehistoric technology.

    C71/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21.3
    • ModpacksIn 19
    • ReleasesLatest 15 Apr

    Download

    ytech-1.21.3-0.10.7.jar

    Released 4 Oct 2025 · 2.1 MB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade C

    How grades work

    Strengths

    • Security checks passed
    • Public source code and issue tracker

    Points lost

    • Many modpacks removed it−10 points
    • No release in 6 months−7 points
    • Releases replaced within 3 days to fix a problem−2 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 months ago (15 Apr 2026) 8 / 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.1.21.3 on NeoForge, 1.20.1 on Forge. 15% or more of the popular mods updated in the last 6 months also have files for 1.21.1. 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 12 of the last 24 months 6 / 6

    • Stability

      12 points lost10 / 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.7 of the 18 modpacks with two or more versions removed it in a later one (39%) See the 7 modpacks0 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.5 of its 24 releases in 2 years needed a quick fix (21%) See the 5 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 · yanny7/ytech 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · yanny7/ytech 3 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.83,511 3 / 4

    • Track record

      3 points lost5 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.3.1 years, 125 releases 5 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in both latest files for recent Minecraft versions. See Security
    Total71 / 100

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

    Images

    • The Mob Update
    • Pottery & Jewelry Update
    • Millstone powered by sheep
    • Deer
    • Bronze and Copper armor
    • Dirt shack
    • Aqueduct
    • Advancements
    • Primitive smelter
    • Alloy smeltery
    • Bronze anvil

    About

    YTech slows the rush to iron by making the opening game a prehistoric progression through the Stone Age and Bronze Age, ending at the start of the Iron Age when you craft your first iron ingot. Early survival requires suitable tools even to mine wood or dirt: players begin by finding flint, striking stone to make tools, gathering grass fibers, and seeking antlered deer for materials used in their first pickaxe. Vanilla livestock are replaced by aurochs, fowl, wild boars, and mouflon, which can be bred over generations into cows, chickens, pigs, and sheep; other wildlife includes deer, saber-toothed tigers, terror birds, woolly mammoths, and woolly rhinos. The mod adds craftable tools and materials such as sharp flint, knives, hammers, saws, molds, and meshes, along with processes including chopping, hammering, milling, pottery, drying, and tanning raw hides. Primitive Smelters and Primitive Alloy Smelters start at 900°C and gain 50°C per chimney, enabling increasingly demanding smelting and alloying as players build toward copper, bronze, iron bloom, and eventually an iron ingot. Other distinctive equipment includes a Millstone powered by a leashed mob, a Strainer that passively collects different loot from flowing water, and a Potter’s Wheel for shaping clay. Water and farming also work differently: water sources can be finite, crops need hydrated farmland, and aqueducts store and transport water while supporting soil hydration and fertilization. Each age has its own advancement tree, giving the long early-game progression milestones along the way to iron.

    Written from Modrinth and CurseForge . How we write it

    In-game changes

    Changes the game's code in 1 area: Blocks and fluidsChanges 1 game code file in this area: how blocks, fluids and redstone work..

    Adds 62 blocks, 199 items, 9 mobs, 316 recipes, 29 advancements, 10 loot tables and 16 sounds.

    Counted from the names and data files in the mod, so the list may not be complete.

    Replaces 222 of vanilla Minecraft's recipes and 171 advancements.

    Details

    Creator
    lalis.jan
    License
    GNU General Public License v3.0 or later
    Downloads
    84K
    Created
    27 Sep 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.

    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 9 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.
      9 latest files: the newest file for each Minecraft version and loader. The answer above is about the 2 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.
      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 · Both 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 both 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 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 · 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.
      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
      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
      288 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
      13 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
      491 code files read

    Compatibility

    See all 125 files
    NeoForge
    Forge
    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 in your game and on the server, or you cannot join.
    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.Its newest file is for 1.21.3. It has no file for the 6 newer Minecraft versions. It also supports 1.21.1, a version many recently updated mods still support.

    Modpacks using this project

    Find modpacks with it

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

    ModpackDownloadsLast version with it
    Mystic's Monstrosity84K downloadslast version with it 7 Dec 2025Vintage Wilds59K downloadslast version with it 9 Aug 2025Mystic's Monstrosity - Greedy Edition30K downloadslast version with it 22 Oct 2025NeoForge Foundry: StoneFactory Edition20K downloadslast version with it 31 Mar 2024Create Echoes of the Great Derailment5.8K downloadslast version with it 19 Jul 2026MI:Lost Favor4.3K downloadslast version with it 10 Jul 2026Ages Reimagined3.8K downloadslast version with it 6 Sep 2026Survivors: Annihilation II1.8K downloadslast version with it 11 Aug 2026Wiph Walden Lagu1.2K downloadslast version with it 24 Nov 2024Edge of chaos1K downloadslast version with it 3 Jul 2025
    1 to 10 of 1912

    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
    1.21.1·NeoForge0.10.130.10.13 · ytech-1.21.1-0.10.13.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·NeoForge, Forge0.10.130.10.13 · ytech-1.20.1-0.10.13-all.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.21.3·NeoForge0.10.70.10.7 · ytech-1.21.3-0.10.7.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21·NeoForge1.21.0-0.6.11.21.0-0.6.1 · ytech-1.21.0-0.6.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.6·NeoForge0.5.00.5.0 · ytech-1.20.6-0.5.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.5·NeoForge0.3.30.3.3 · ytech-1.20.5-0.3.3.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.4·NeoForge0.9.20.9.2 · ytech-1.20.4-0.9.2-all.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.3·NeoForge0.3.30.3.3 · ytech-1.20.3-0.3.3.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.2·NeoForge0.3.30.3.3 · ytech-1.20.2-0.3.3.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    125 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1The latest file for its Minecraft version and loader·NeoForge0.10.130.10.13 · ytech-1.21.1-0.10.13.jar (main file)·15 Apr 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
    1.20.1The latest file for its Minecraft version and loader·Forge, NeoForge0.10.130.10.13 · ytech-1.20.1-0.10.13-all.jar (main file)·15 Apr 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.3 MB
    1.21.1·NeoForge0.10.120.10.12 · ytech-1.21.1-0.10.12.jar (main file)·4 Apr 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
    1.20.1·Forge, NeoForge0.10.120.10.12 · ytech-1.20.1-0.10.12-all.jar (main file)·4 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.3 MB
    1.21.1·NeoForge0.10.110.10.11 · ytech-1.21.1-0.10.11.jar (main file)·24 Feb 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.20.1·Forge, NeoForge0.10.110.10.11 · ytech-1.20.1-0.10.11-all.jar (main file)·24 Feb 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.3 MB
    1.21.1·NeoForge0.10.100.10.10 · ytech-1.21.1-0.10.10.jar (main file)·5 Jan 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.21.1·NeoForge0.10.90.10.9 · ytech-1.21.1-0.10.9.jar (main file)·12 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.20.1·NeoForge, Forge0.10.90.10.9 · ytech-1.20.1-0.10.9-all.jar (main file)·12 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.3 MB
    1.21.1·NeoForge0.10.80.10.8 · ytech-1.21.1-0.10.8.jar (main file)·11 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.20.1·NeoForge, Forge0.10.80.10.8 · ytech-1.20.1-0.10.8-all.jar (main file)·11 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.3 MB
    1.21.3The latest file for its Minecraft version and loader·NeoForge0.10.70.10.7 · ytech-1.21.3-0.10.7.jar (main file)·4 Oct 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.1 MB
    1.21.1·NeoForge0.10.70.10.7 · ytech-1.21.1-0.10.7.jar (main file)·4 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.20.1·NeoForge, Forge0.10.70.10.7 · ytech-1.20.1-0.10.7-all.jar (main file)·4 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.3 MB
    1.21.3·NeoForge0.10.60.10.6 · ytech-1.21.3-0.10.6.jar (main file)·5 Jun 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.1 MB
    1.21.1·NeoForge0.10.60.10.6 · ytech-1.21.1-0.10.6.jar (main file)·5 Jun 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.20.1·NeoForge, Forge0.10.60.10.6 · ytech-1.20.1-0.10.6-all.jar (main file)·5 Jun 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.3 MB
    1.21.1·NeoForge0.10.50.10.5 · ytech-1.21.1-0.10.5.jar (main file)·12 May 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.2 MB
    1.21.1·NeoForge0.10.40.10.4 · ytech-1.21.1-0.10.4.jar (main file)·27 Apr 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthNot on CurseForgeDownload · Stable · 2.2 MB
    1.21.3·NeoForge0.10.30.10.3 · ytech-1.21.3-0.10.3.jar (main file)·9 Feb 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 2.1 MB
    1 to 20 of 12512345…7

    Quick fixes

    In the last 2 years, 5 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.5

    • 1.20.1-0.10.912 Oct 2025Fixed Tree Stump missing mineable tool - Fixed recipes doesn't…
    • 1.20.1-0.9.226 Nov 2024…Changed Stone Mortar and Pestle recipe - Fixed crash on crop grow - Fixed spawning vanilla mobs even…
    • 1.20.1-0.9.123 Nov 2024Fixed crash when equipped copper/bronze armor
    • 1.21.1-0.8.114 Nov 2024Fixed wrongly requiring all optional mods
    • 1.20.1-0.7.14 Nov 2024Fixed crash due to missing library