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    2,055,424 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 2026.269,392 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.

    Sky Islands

    Mod

    Add a Skyland world generator for the overworld.

    -Not graded
    • Overview-
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.12.2
    • ModpacksIn 64
    • ReleasesLatest Mar 2018

    Download

    skylands-1.5.5.jar

    Released 13 Mar 2018 · 81.3 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why no grade

    How grades work

    Finished or replaced projects get no grade: they will not get fixes or new versions.

    • The project page: [This mod is no longer maintained]
    All 11 criteria

    • Maintenance

      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.8.6 years ago (13 Mar 2018)
      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.Newest supported: 1.12.2. About 9 years behind popular modding versions. Latest Minecraft: 26.3.
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.No release in the last 24 months

    • Stability

      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.11 of the 51 modpacks with two or more versions removed it in a later one (22%)
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.
      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

    • Transparency

      Source codeWhether the project page links to its source code, so anyone can read what it does.No link on the project page
      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

      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.93,711

    • Track record

      AgeHow long the project has existed. It counts less when no new file came out recently.8.8 years, 17 releases

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 3 latest files. See Security

    Images

    • Starting Island
    • BOP 8
    • BOP 7
    • BOP 6
    • BOP 5
    • BOP 4
    • BOP 3
    • BOP 2
    • BOP 1
    • Screenshot 6
    • Screenshot 5
    • Screenshot 4
    • Screenshot 3
    • Screenshot 2
    • Screenshot 1

    About

    Sky Islands adds a Skyland world generator for the Overworld, creating a void world dotted with floating islands of varied sizes as an alternative to ordinary terrain or a more demanding skyblock start. You can configure biome generation and vanilla ore generation, including through the world-creation customization screen. The generator can use Biomes O’ Plenty biomes when its compatibility option is enabled and that mod is installed. An optional starting-inventory setting grants elytra and fireworks when you first spawn.

    Written from CurseForge . How we write it

    In-game changes

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.10.2 to 1.12.2.

    Adds no new blocks, items or other content.

    Keeps all of vanilla Minecraft's textures, models and sounds.

    Often used with it

    See all 30
    ChiselCBetterFpsCInventory Tweaks [1.12 only]-BiblioCraftDPams HarvestCraftD

    Details

    Creator
    Frinn
    License
    Not known
    Downloads
    94K
    Created
    31 Dec 2017
    Official page
    CurseForge

    Security

    No harmful code found

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.10.2 to 1.12.2.

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

    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 3 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.
      3 latest files: the newest file for each Minecraft version and loader. None is for a recent Minecraft version, so the answer above is about all of them. 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

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.10.2 to 1.12.2.

    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 · All 3 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 3 files, for Minecraft 1.10.2 to 1.12.2. See each file in Releases

    AI

    No sign that AI was used to make it

    We looked for AI tools in its texts, files and images and found none.

    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 · 4 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.
    • 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
      2 of 34 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
    • 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
      28 code files read

    Compatibility

    See all 17 files
    Forge
    1.101.141.171.2026.1

    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.Nothing
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.No file yet for any of the last 6 Minecraft versions.

    Modpacks using this project

    Find modpacks with it

    64 modpacks include Sky Islands in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Less Tech More Dragon [RETIRED]94K downloadslast version with it 26 Oct 2018Destiny22K downloadslast version with it 11 Apr 2018Unabridged V13K downloadslast version with it 28 Mar 2019Set Sail7.5K downloadslast version with it 31 Jul 2019Evolution: Sky islands7.3K downloadslast version with it 19 Oct 2018World of Aether3.8K downloadslast version with it 22 Dec 2018UNFALLEN_3.2K downloadslast version with it 12 Feb 2018Portal Busters2.5K downloadslast version with it 16 Sep 2019Magic, Tech and More2.5K downloadslast version with it 23 Aug 2019Oni Pack Mild 22.3K downloadslast version with it 19 Mar 2019
    1 to 10 of 30123

    Often in the same modpacks

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

    ProjectTypeShareGrade
    ChiselCModin 75% of the modpacks with Sky IslandsBetterFpsCModin 72% of the modpacks with Sky IslandsInventory Tweaks [1.12 only]-Modin 72% of the modpacks with Sky IslandsBiblioCraftDModin 63% of the modpacks with Sky IslandsPams HarvestCraftDModin 63% of the modpacks with Sky IslandsCoFH WorldDModin 59% of the modpacks with Sky IslandsEnder Storage 1.8.+CModin 59% of the modpacks with Sky IslandsTinkers' Tool LevelingDModin 58% of the modpacks with Sky IslandsBotaniaAModin 58% of the modpacks with Sky IslandsThermal FoundationCModin 55% of the modpacks with Sky Islands
    1 to 10 of 30123

    Latest files

    The newest file for each Minecraft version and loader. None is for a recent Minecraft version. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    Older Minecraft versions
    1.12.2·Not stated1.5.51.5.5 · skylands-1.5.5.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.11.2·Not stated1.4.01.4.0 · skylands-1.11.2-1.4.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.10.2·Not stated1.4.01.4.0 · skylands-1.10.2-1.4.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    17 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.12.2The latest file for its Minecraft version and loader·Forge1.5.51.5.5 · skylands-1.5.5.jar·13 Mar 2018PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 81.3 KB
    1.12.2·Forge1.5.41.5.4 · skylands-1.5.4.jar·4 Mar 2018PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 80.5 KB
    1.12.2·Forge1.5.31.5.3 · skylands-1.5.3.jar·28 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 80.3 KB
    1.12.2·Forge1.5.21.5.2 · skylands-1.5.2.jar·27 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 79.6 KB
    1.12.2·Forge1.5.11.5.1 · skylands-1.5.1.jar·25 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 79.6 KB
    1.12.2·Forge1.5.01.5.0 · skylands-1.5.0.jar·24 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 78.0 KB
    1.10.2The latest file for its Minecraft version and loader·Forge1.4.01.4.0 · skylands-1.10.2-1.4.0.jar·9 Feb 2018PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 44.9 KB
    1.11.2The latest file for its Minecraft version and loader·Forge1.4.01.4.0 · skylands-1.11.2-1.4.0.jar·9 Feb 2018PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 45.7 KB
    1.12.2·Forge1.4.01.4.0 · skylands-1.12.2-1.4.0.jar·9 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 45.8 KB
    1.12.2·Forge1.3.11.3.1 · skylands-1.12.2-1.3.1.jar·2 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 38.3 KB
    1.11.2·Forge1.3.11.3.1 · skylands-1.11.2-1.3.1.jar·2 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 38.2 KB
    1.10.2·Forge1.3.11.3.1 · skylands-1.10.2-1.3.1.jar·2 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 37.1 KB
    1.12.2·Forge1.3.01.3.0 · skylands-1.12.2-1.3.0.jar·1 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 37.4 KB
    1.11.2·Forge1.3.01.3.0 · skylands-1.11.2-1.3.0.jar·1 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 37.2 KB
    1.10.2·Forge1.3.01.3.0 · skylands-1.10.2-1.3.0.jar·1 Feb 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 36.2 KB
    1.12.2·Forge1.1.01.1.0 · mars-1.1.0.jar·8 Jan 2018PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 24.2 KB
    1.12.2·Forge1.0.01.0.0 · mars-1.0.0.jar·31 Dec 2017PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 10.3 KB