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    2,061,885 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 26 Oct 2026.642,417 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 26 Oct 2026.269,626 projects gradedProjects with a letter from A to F. Counted on 26 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    NauTec

    Mod

    Explore deep oceans and discover strange new technologies.

    Download

    Files come from Modrinth and CurseForge servers.

    nautec-1.21.1-NeoForge-0.4.1.jar

    Released 13 May 2026 · 1.5 MB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • Curios APIAMinecraft 1.21.1 · NeoForge (release 9.5.1)
    • ModonomiconAMinecraft 1.21.1 · NeoForge (release 1.120.7)
    B85/ 100
    Security
    Passed
    Privacy
    None found
    Runs on
    Client and server
    Loaders
    NeoForge
    Minecraft versions
    Up to 1.21.1
    • OverviewB
    • SecurityPassed
    • PrivacyNone found
    • AIPossible AI tool
    • CompatibilityUp to 1.21.1
    • ModpacksIn 66
    • ReleasesLatest 13 May
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

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

    Points lost

    • No release in 5 months−5 points
    • Releases replaced within 3 days to fix a problem−4 points
    • Some modpacks removed it−2 points
    All 11 criteria

    • Maintenance

      3 points lost24 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.5 months ago (13 May 2026) 9 / 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.1.21.1 on NeoForge. 65% of the 995 popular NeoForge 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 9 of the last 24 months 6 / 6

    • Stability

      6 points lost16 / 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.8 of the 58 modpacks with two or more versions removed it in a later one (14%) See the 8 modpacks8 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.7 of its 26 releases in 2 years needed a quick fix (27%) See the 7 releases3 / 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 · breakinblocks/Nautec 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · breakinblocks/Nautec 3 / 3

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.1,921,505 4 / 4

    • Track record

      2 points lost6 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.2.1 years, 36 releases 6 / 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
    Total85 / 100

    60.2 of the 71 points that apply = 85 out of 100. The points above are rounded to whole numbers.

    Images

    • Crystal Geode
    • Guardian Eye Augment & Machinery
    • Ancient Ruins
    • Multiblocks
    • Multiblocks #2
    • Augmentation Station
    • Diving Suit
    • Drain
    • Item Transformation
    • Long Distance Laser

    About

    NauTec is an underwater technology mod that moves progression onto the ocean floor, where exploration and engineering revolve around aquatic power, biological resources, and body augmentations. Players begin by finding a prismarine crystal geode beneath a dark prismarine ruin and activating its Aquatic Catalyst with a Heart of the Sea and fuel; the Catalyst sends power through line-of-sight laser beams rather than cables. Relays, Laser Junctions, and Long Distance Lasers route and split those beams, while Prismarine Crystals raise beam purity so that more demanding processing and item transformations can run. Dropping items into a sufficiently pure beam transforms them directly, and the first iron transformation into Aquarine Steel opens the way to machines such as the Mixer, Mutator, Incubator, Bacterial Analyzer, Deep Sea Drain, and Augmentation Station. The ocean adds four biomes: the dark, cold Abyssal Trench; the clear, glowing Bioluminescent Grove; the warm, murky Hydrothermal Vents; and the bright, shallow Prismarine Reef, along with six plants and four creatures. Players can fit nearly two dozen augments across nine body slots, including the Drowned Lung and Dolphin Fin for underwater exploration, Magnet and Leap for movement, Guardian Eye and trident launchers for combat, and Creative Flight at the top end. Fishing adds drifting lucky zones with bonus loot, while the Prismatic Fishing Rod offers one of three catch minigames for a chance at an extra treasure roll. The mod also includes powered Aquarine Steel gear, a Diving Suit, Neptune's Trident, and the two-seat Abyssal Submersible, which runs on stored power and keeps its crew breathing while sealed and powered.

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

    In-game changes

    Changes the game's code in 2 areas: Inventory and itemsChanges 2 game code files in this area: items, chests and other containers, crafting and enchanting. and World generationChanges 1 game code file in this area: terrain, biomes and structures made when new land is created..

    Adds:

    • 3 structuresDeepslate Crystal Geode, Ruins 1 and Stone Crystal Geode.
    • 165 recipes
    • 10 loot tables

    Counted from the files of the mod. Content made only in its code is not counted.

    Replaces 6 of vanilla Minecraft's world generation files.

    Details

    Creators
    ReclipseTheOne, Thepigcat76, Leclowndu93150 and ktpatient
    License
    MIT License
    Downloads
    1.9M
    Created
    23 Sep 2024
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues , 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 · Both 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.
      4 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

    An AI tool may have been used

    Claude Code is named in the ignore list of its repository.

    This does not show that it was used to make the files you download.

    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.
      Possible signThe tool was seen around the project. This does not show that it was used to make the files you download.: Claude Code files listed in its ignore list .claude
    • 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
      36 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
      267 images 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
      465 code files read

    Compatibility

    See all 36 files
    NeoForge
    1.2126.126.2

    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.
    Curios APIAModonomiconA
    OptionalProjects it can work with but does not need. The author lists them.
    Just Enough Items (JEI)A
    IncludesProjects packed inside its files.Nothing
    LanguagesThe languages the text in the game is available in, from the language files of its latest files we checked. A language file can translate only part of the text.English, 简体中文 and 繁體中文
    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 1.21.1. Many recently updated mods still support 1.21.1.

    Related projects

    Projects that need NauTec to work.

    ProjectTypeDownloadsGrade
    Big Globe Compat - NautecCData pack60 downloads

    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: 2 modpacksFeb 2025: 3 modpacksMar 2025: 6 modpacksApr 2025: 5 modpacksMay 2025: 7 modpacksJun 2025: 6 modpacksJul 2025: 7 modpacksAug 2025: 13 modpacksSep 2025: 11 modpacksOct 2025: 3 modpacksNov 2025: 6 modpacksDec 2025: 9 modpacksJan 2026: 7 modpacksFeb 2026: 6 modpacksMar 2026: 5 modpacksApr 2026: 9 modpacksMay 2026: 7 modpacksJun 2026: 7 modpacksJul 2026: 7 modpacksAug 2026: 8 modpacksSep 2026: 5 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 20243
    Nov 20242
    Dec 20243
    Jan 20252
    Feb 20253
    Mar 20256
    Apr 20255
    May 20257
    Jun 20256
    Jul 20257
    Aug 202513
    Sep 202511
    Oct 20253
    Nov 20256
    Dec 20259
    Jan 20267
    Feb 20266
    Mar 20265
    Apr 20269
    May 20267
    Jun 20267
    Jul 20267
    Aug 20268
    Sep 20265

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

    ModpackDownloadsLast version with it
    FTB OceanBlock 21.5M downloadslast version with it 24 Aug 2026MineColonies: Dimensional Adventure1.2M downloadslast version with it 8 Oct 2025FTB Evolution423K downloadslast version with it 12 Oct 2026Ascension of Ages24K downloadslast version with it 3 Sep 2026MineColonies: Dimensional Adventure [Re-Blueprinted]9.3K downloadslast version with it 7 Jul 2025Forge of Eternity4.5K downloadslast version with it 14 Oct 2026MI:Lost Favor4.3K downloadslast version with it 27 Oct 2025MorayIndustryAndElderlyCare | 默锐工业与养老整合包4.3K downloadslast version with it 17 Sep 2026Angry Ducks Advanced3.3K downloadslast version with it 1 Feb 2026InfiniX: Reborn2.3K downloadslast version with it 17 Oct 2024
    1 to 10 of 30123

    Often in the same modpacks

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

    ProjectTypeShareGrade
    Explorer's CompassAModin 76% of the modpacks with NauTecSophisticated StorageAModin 74% of the modpacks with NauTecFTB Ultimine (NeoForge)AModin 73% of the modpacks with NauTecsparkAModin 73% of the modpacks with NauTecTrashSlotAModin 70% of the modpacks with NauTecArs NouveauAModin 70% of the modpacks with NauTecFTB Chunks (NeoForge)AModin 70% of the modpacks with NauTecFTB Essentials (Forge & Fabric)AModin 68% of the modpacks with NauTecChippedCModin 68% of the modpacks with NauTecRelicsAModin 67% of the modpacks with NauTec
    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
    1.21.1·NeoForge0.4.10.4.1 · nautec-1.21.1-NeoForge-0.4.1.jarSends: None foundRequires:Curios API, ModonomiconCurios API, ModonomiconPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1·NeoForge0.3.20.3.2 · nautec-1.21.1-NeoForge-0.3.2.jarSends: None foundRequires:Curios API, ModonomiconCurios API, ModonomiconPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.21·NeoForge0.1.80.1.8 · nautec-0.1.8.jarSends: None foundRequires:Modonomicon, Curios API ContinuationModonomicon, Curios API ContinuationPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21·NeoForge0.0.70.0.7 · nautec-0.0.7.jarSends: None foundRequires:Modonomicon, Curios API ContinuationModonomicon, Curios API ContinuationPassedOur checks found nothing harmful in this file. Its code was read too.

    36 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1The latest file for its Minecraft version and loader·NeoForge0.4.10.4.1 · nautec-1.21.1-NeoForge-0.4.1.jar·13 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.5 MB
    1.21.1·NeoForge0.4.00.4.0 · nautec-1.21.1-NeoForge-0.4.0.jar·8 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.5 MB
    1.21.1The latest file for its Minecraft version and loader·NeoForge0.3.20.3.2 · nautec-1.21.1-NeoForge-0.3.2.jar (main file)·30 Oct 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 1.5 MB
    1.21.1·NeoForge0.3.00.3.0 · nautec-1.21.1-NeoForge-0.3.0.jar·22 Jun 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.5 MB
    1.21.1·NeoForge0.2.90.2.9 · nautec-0.2.9.jar·18 May 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.8e0.2.8e · nautec-0.2.8e.jar·12 May 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.8d0.2.8d · temp_nautec-0.2.8d.jar (main file)·8 Mar 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.8.1c0.2.8.1c · nautec-0.2.8.jar·3 Mar 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.8.1b0.2.8.1b · nautec-0.2.8.1b.jar·1 Mar 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.8.10.2.8.1 · nautec-0.2.7.1.jar·28 Feb 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.80.2.8 · nautec-1.21.1-NeoForge-0.2.8.jar·28 Feb 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.70.2.7 · nautec-0.2.7.jar·27 Feb 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.60.2.6 · nautec-0.2.6.jar·26 Feb 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.50.2.5 · nautec-0.2.5.jar·24 Feb 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.40.2.4 · nautec-0.2.4.jar·21 Feb 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.30.2.3 · nautec-0.2.3.jar·17 Feb 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.20.2.2 · nautec-0.2.2.jar·16 Feb 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.10.2.1 · nautec-0.2.1.jar (main file)·15 Feb 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21.1·NeoForge0.2.00.2.0 · nautec-0.2.0.jar (main file)·13 Feb 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 1.4 MB
    1.21 to 1.21.11.21 to 1.21.1The latest file for its Minecraft version and loader·NeoForge0.1.80.1.8 · nautec-0.1.8.jar (main file)·1 Dec 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 1022.6 KB
    1 to 20 of 3612

    Quick fixes

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

    See them, newest first
    • nautec-0.2.8.1c.jar3 Mar 2025Fix issue #23
    • nautec-1.21.1-NeoForge-0.2.8.jar28 Feb 2025fix mixer crash
    • nautec-0.2.7.jar27 Feb 2025Fix server crashes
    • nautec-0.2.6.jar26 Feb 2025Fix server crash and hopefully also crystal not rendering…
    • nautec-0.2.3.jar17 Feb 2025Fix mixer capabilties
    • nautec-0.2.2.jar16 Feb 2025Fix mixer
    • nautec-0.2.1.jar15 Feb 2025Fixes.