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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.

    FTB StoneBlock 4

    Modpack

    The stone remembers. Dive into StoneBlock 4, the next evolution of Minecraft’s underground survival: explore handcrafted Vaults, learn from ancient Echoes, power the World Engine, all on 1.21.1

    86%Modpack: 86% of its graded mods are A or Bof mods A or B
    • Overview86%
    • SecurityPartly checked
    • Privacy9 send data
    • AIIn 23 mods
    • CompatibilityMinecraft 1.21.1
    • ReleasesLatest 21 Oct

    Download

    ftb-stoneblock-4-1.24.1.zip

    Released 21 Oct 2026 · 215.6 MB

    Partly checked: 415 of 418 projects checked (3 not checked yet). See Security

    Download
    OverviewSecurityPrivacyAICompatibilityReleases

    Mod grades

    How grades work

    Modpacks get no grade of their own, so we show the grades of its mods. Of its 418 graded mods, 361 are graded A or B, 48 C and 9 D to F. Its last update came out 3 days ago, for Minecraft 1.21.1. See the mods

    Images

    • Cave Starter
    • Spawn
    • Cherrygrove starter
    • A stange Engine like structure?
    • Arcane Grove
    • Is that a Yeti?!
    • Water Arena
    • Battleground
    • Nether Dungeon
    • Ignis fight

    About

    FTB StoneBlock 4 is an underground survival modpack built around carving out a home and progressing through a story-rich world of stone. Players begin in the Garden of Stone, an amethyst-lit underground glade, and choose one of five starting islands, ranging from a classic stone enclosure to biome-themed starts. Six Foundation Chapters guide progression through branching questlines: completing two paths advances the journey, while finishing all three reveals deeper lore and premium rewards. Handcrafted Vaults offer logic puzzles, combat encounters, and endurance trials, rewarding exploration with rare loot, unique resources, and materials needed for progression. Holographic Echoes inhabit handcrafted sanctuaries, where guides such as the Echo of Guidance, the Machinist, and the Quartermaster unlock quests, share the world’s history, and offer trades. The World Engine is a central relic that develops through more than 15 multiblock upgrades, opening crafting tiers, recipes, and lost technologies before reshaping the world. Resource gathering starts with brushing ore chunks from gravel, sand, and dust, then expands to ultisifting and the Unearther, where a villager refines supplied debris and becomes more efficient with food, tools, and upgrades. The pack combines mechanical and industrial automation from Create and Mekanism with magic from Ars Nouveau and Occultism, alongside item replication, Twilight Forest exploration, breedable resource-producing Chickens, and Fluid Cows. It supports solo or cooperative play, with FTB Team Bases and options to host or access managed multiplayer worlds through the FTB client.

    Written from CurseForge . How we write it

    Content of this pack415 of 418 checked

    The mods of its newest release (Minecraft 1.21.1 · NeoForge, 21 Oct 2026). Each check result is for the latest files of that mod, which may not be the version in this pack.

    ProjectGradeSecurity
    Just Enough Items (JEI)Mod · 725.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Cloth Config APIMod · 569.3M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Mouse TweaksMod · 548.3M downloadsAPassedPassed: our checks found nothing harmful in the latest files.AppleSkinMod · 519.2M downloadsAPassedPassed: our checks found nothing harmful in the latest files.GeckolibMod · 500.6M downloadsAPassedPassed: our checks found nothing harmful in the latest files.BookshelfMod · 473M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Architectury APIMod · 460M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ControllingMod · 441.6M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Entity CullingMod · 425.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.SodiumMod · 412.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Jade 🔍Mod · 354M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Curios APIMod · 350M downloadsAPassedPassed: our checks found nothing harmful in the latest files.CollectiveMod · 342.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.PatchouliMod · 341.3M downloadsAPassedPassed: our checks found nothing harmful in the latest files.PlaceboMod · 340.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Enchantment DescriptionsMod · 337.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Iris ShadersMod · 337.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Moonlight LibMod · 336.8M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ModernFixMod · 334.2M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ImmediatelyFastMod · 329.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.BalmMod · 329M downloadsAPassedPassed: our checks found nothing harmful in the latest files.FancyMenuMod · 299.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.KonkreteMod · 295.2M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Puzzles LibMod · 291.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Better AdvancementsMod · 284.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.
    1 to 25 of 41812345…17
    Changes since the previous release · 3 removed

    Compared with the release of 12 Oct 2026 for the same platform, Minecraft version and loader. We do not compare the versions of the mods yet.

    Removed
    Status Effect Bars Reforged, Leaderboards and Synesthesia: Sound Visualizer
    Share graded A or B
    unchanged

    Details

    Creators
    FTB and FTBTeam
    License
    Not known
    Downloads
    3M
    Created
    28 Oct 2025
    Official page
    CurseForge

    Security

    No harmful code found in the projects we checked

    We checked 415 of its 418 projects and the files in the pack itself, without running them.

    Why we show this: a modpack installs the files of its mods, and each mod runs on your computer like any program. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: a modpack has no grade of its own, and each mod's result counts in that mod's grade.

    How we checked · 415 of 418 projects checked
    • Its projects
      See what is in this pack
      418 projects
    • Not checked yet
      Better Sophisticated Backpack Upgrades (BSBU)Pretty X Smart Pipez Mekanism EditionCreate: Shimmer
      3 projects
    • Files in the pack itself
      4,008 settings files, 214 scripts, 2 resource, shader or data packs, 2,249 other files, 3 mod jars.

    Privacy

    9 mods send something about you

    We read the code of 405 of its 407 mods, without running it.

    Entity CullingCrash reportsCollectivePlayer IDFancyMenuCrash reportssparkUnknown dataCrash AssistantUnknown dataPolyLibCrash reportsPsiUnknown dataTesseractPlayer IDAuth MePlayer ID +1

    Why we show this: a modpack runs the code of its mods, and 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 · 405 of 407 mods read
    • Go online onlyTheir code contacts a web address, for example to check for updates. We found nothing it sends about you.
      BookshelfPlaceboIris ShadersMoonlight LibSupplementariesFTB Library (NeoForge)The Twilight ForestRhinoImmersive EngineeringKubeJSEuphoria PatchesKiwi 🥝Ars NouveauIron FurnacesActually AdditionsProjectESimple Rich Discord PresencePrickleME RequesterChance CubesEmojifulGadgets Against GrindIron's LibBisectHosting Server Integration Menu [NEOFORGE]Cable FacadesFTB Promoter
      26 mods
    • Crash reports or usage dataTheir author declares crash reports or usage data on Modrinth, or such a service is named in their files. Reading their code did not show it.
      KubeJSdeclared by its authorIron's Libdeclared by its author
      2 mods
    • Send nothing
      Their code contacts no web address.
      370 mods
    • Not read yet
      We have not read their code yet.
      2 mods

    AI

    AI used in 23 of the 313 mods we checked

    We found an AI tool in them, or their authors declared AI content.

    94 mods are not checked yet.

    2 mods can use AI in the game.

    Just Enough Items (JEI)Claude CodeJade 🔍GitHub Copilot (coding agent)Iris ShadersdeclaredModernFixClaude CodeFancyMenuCodexPuzzles LibdeclaredSupplementariesClaude CodeApplied Energistics 2Claude CodeFTB Quests (NeoForge)GitHub CopilotRefined StorageClaude CodeFTB Chunks (NeoForge)GitHub CopilotEuphoria PatchesGitHub CopilotCreate Crafts & AdditionsdeclaredKiwi 🥝declaredPick Up NotifierdeclaredOverflowing BarsdeclaredSuper Factory Managerin the gameConfigured DefaultsdeclaredAdvanced Loot Info (ALI)Claude CodeFast Item FramesdeclaredOritechAI image generatorOracle Indexin the gameShield APIdeclaredCrafting Station: J/EMI Edition UpdatedClaude CodeAdvanced Core Info (ACI)Claude Code

    No sign so far that AI was used to make the pack itself

    We looked for AI tools in its texts and code history and found none.

    We have not read its files and images yet.

    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 · 2 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
      4 of 40 changelogs read
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Not read yet
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Not read yet

    Compatibility

    See all 49 files
    NeoForge
    1.2126.126.2

    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.418 projects, listed in the Overview tab.
    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.

    49 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1·NeoForge1.24.11.24.1 · ftb-stoneblock-4-1.24.1.zip·21 Oct 2026Partly checkedPartly checked: 415 of 418 projects checked (3 not checked yet).Open this file on CurseForgeDownload · Stable · 215.6 MB
    1.21.1·NeoForge1.23.01.23.0 · ftb-stoneblock-4-1.23.0.zip·12 Oct 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.6 MB
    1.21.1·NeoForge1.22.01.22.0 · ftb-stoneblock-4-1.22.0.zip·22 Sep 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.6 MB
    1.21.1·NeoForge1.21.01.21.0 · ftb-stoneblock-4-1.21.0.zip·9 Sep 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.6 MB
    1.21.1·NeoForge1.20.11.20.1 · ftb-stoneblock-4-1.20.1.zip·1 Sep 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.5 MB
    1.21.1·NeoForge1.20.01.20.0 · ftb-stoneblock-4-1.20.0.zip·26 Aug 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.5 MB
    1.21.1·NeoForge1.19.11.19.1 · ftb-stoneblock-4-1.19.1.zip·12 Aug 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.5 MB
    1.21.1·NeoForge1.19.01.19.0 · ftb-stoneblock-4-1.19.0.zip·11 Aug 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.5 MB
    1.21.1·NeoForge1.18.01.18.0 · ftb-stoneblock-4-1.18.0.zip·9 Aug 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.5 MB
    1.21.1·NeoForge1.17.21.17.2 · ftb-stoneblock-4-1.17.2.zip·29 Jul 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.5 MB
    1.21.1·NeoForge1.17.11.17.1 · ftb-stoneblock-4-1.17.1.zip·28 Jul 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.5 MB
    1.21.1·NeoForge1.17.01.17.0 · ftb-stoneblock-4-1.17.0.zip·24 Jul 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.5 MB
    1.21.1·NeoForge1.16.01.16.0 · ftb-stoneblock-4-1.16.0.zip·2 Jul 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.4 MB
    1.21.1·NeoForge1.15.31.15.3 · ftb-stoneblock-4-1.15.3.zip·17 Jun 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 216.0 MB
    1.21.1·NeoForge1.15.21.15.2 · ftb-stoneblock-4-1.15.2.zip·16 Jun 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 216.0 MB
    1.21.1·NeoForge1.15.01.15.0 · ftb-stoneblock-4-1.15.0.zip·13 Jun 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 212.8 MB
    1.21.1·NeoForge1.14.21.14.2 · ftb-stoneblock-4-1.14.2.zip·3 Jun 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 215.4 MB
    1.21.1·NeoForge1.14.11.14.1 · ftb-stoneblock-4-1.14.1.zip·31 May 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 213.3 MB
    1.21.1·NeoForge1.14.01.14.0 · ftb-stoneblock-4-1.14.0.zip·27 May 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 213.3 MB
    1.21.1·NeoForge1.13.11.13.1 · ftb-stoneblock-4-1.13.1.zip·12 May 2026Not checkedWe have not checked this file yet.Open this file on CurseForgeDownload · Stable · 213.1 MB
    1 to 20 of 49123