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    2,046,932 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 24 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 24 Oct 2026.269,480 projects gradedProjects with a letter from A to F. Counted on 24 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Lost Souls

    Mod

    The Lost Cities addon to add more danger to the buildings.

    B87/ 100
    • OverviewB
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21.1
    • ModpacksIn 820
    • ReleasesLatest 13 Aug

    Download

    lostsouls-1.21-5.0.1.jar Beta

    Released 26 Dec 2025 · 45.2 KB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • The Lost CitiesAMinecraft 1.21.1 · NeoForge (release 1.21-8.4.6)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

    • Public source code and issue tracker
    • Widely used
    • Around for years

    Points lost

    • Many modpacks removed it−4 points
    • Releases replaced within 3 days to fix a problem−3 points
    • Releases in only 5 of the last 24 months−2 points
    All 11 criteria

    • Maintenance

      2 points lost25 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.2 months ago (13 Aug 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.1.21.1 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 5 of the last 24 months 4 / 6

    • Stability

      7 points lost15 / 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.74 of the 344 modpacks with two or more versions removed it in a later one (22%) See the 74 modpacks6 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.2 of its 8 releases in 2 years needed a quick fix (25%) See the 2 releases4 / 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.1 known conflict, but it does not count in the grade See the known conflict5 / 5

    • Transparency

      Full points10 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · McJtyMods/LostSouls 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · McJtyMods/LostSouls 3 / 3

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.19,015,982 4 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.9.3 years, 40 releases 8 / 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
    Total87 / 100

    61.5 of the 71 points that apply = 87 out of 100. The points above are rounded to whole numbers.

    About

    Lost Souls is a configurable server-side addon for The Lost Cities that makes its buildings more dangerous by spawning additional, stronger vanilla mobs inside them. Buildings may be haunted, causing boosted mobs to spawn while a player is inside, regardless of lighting unless that behavior is disabled in the configuration. A haunted building is cleared after the player defeats a configured number of mobs; settings can also control which mobs appear, how many spawn, their armor and weapons, and their strength.

    Written from Modrinth and CurseForge . How we write it

    In-game changes

    Does not change the game's code directly.

    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
    The Lost CitiesAAI Improvements: Performance TuningAImmersive EngineeringCBetterFpsCInventory Tweaks [1.12 only]-

    Details

    Creator
    McJty
    License
    MIT License
    Downloads
    19M
    Created
    13 Jul 2017
    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 · All 8 latest files checked, last on 15 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.
      8 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 that AI was used to make it

    We looked for AI tools in its texts, files, images and code history 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 · 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.
      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
      20 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
    • 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
      18 code files read

    Compatibility

    See all 40 files
    NeoForge
    Forge
    1.121.151.171.2026.1

    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.Install it on the server. Players join without installing it. It also works in singleplayer.
    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.
    The Lost CitiesA
    OptionalProjects it can work with but does not need. The author lists them.
    The One ProbeA
    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 1.21.1. Many recently updated mods still support 1.21.1.

    Known conflicts

    These projects do not work together with Lost Souls: their authors or Lost Souls' author say so. If you install both, the game can crash or some features can stop working. Some of them do the same job as Lost Souls, so you only need one.

    ProjectTypeDownloadsDeclared by
    RotwireMod388 downloadsdeclared by Rotwire

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    30150
    Oct 2024: 18 modpacksNov 2024: 28 modpacksDec 2024: 25 modpacksJan 2025: 26 modpacksFeb 2025: 16 modpacksMar 2025: 15 modpacksApr 2025: 12 modpacksMay 2025: 18 modpacksJun 2025: 15 modpacksJul 2025: 15 modpacksAug 2025: 17 modpacksSep 2025: 13 modpacksOct 2025: 14 modpacksNov 2025: 12 modpacksDec 2025: 13 modpacksJan 2026: 16 modpacksFeb 2026: 10 modpacksMar 2026: 9 modpacksApr 2026: 6 modpacksMay 2026: 6 modpacksJun 2026: 12 modpacksJul 2026: 11 modpacksAug 2026: 20 modpacksSep 2026: 12 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 202418
    Nov 202428
    Dec 202425
    Jan 202526
    Feb 202516
    Mar 202515
    Apr 202512
    May 202518
    Jun 202515
    Jul 202515
    Aug 202517
    Sep 202513
    Oct 202514
    Nov 202512
    Dec 202513
    Jan 202616
    Feb 202610
    Mar 20269
    Apr 20266
    May 20266
    Jun 202612
    Jul 202611
    Aug 202620
    Sep 202612

    820 modpacks include Lost Souls in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    RLCraft30.4M downloadslast version with it 20 Apr 2020DeceasedCraft - Urban Zombie Apocalypse9.8M downloadslast version with it 17 Jul 2026All the Mods 3 - ATM33.1M downloadslast version with it 20 Jan 2022Parasites by Forge Labs1.9M downloadslast version with it 19 Apr 2021DarkRPG - RPG with Vampires, Dragons, Magic, Quests, Adventure840K downloadslast version with it 9 Sep 2025Astroblock631K downloadslast version with it 27 Jul 2022All the Mods 3 - Remix - ATM3R516K downloadslast version with it 9 Jan 2021TownCraft441K downloadslast version with it 12 Sep 2023Desolate Planet - A Crash Landing Remake328K downloadslast version with it 19 Jan 2025TNP Limitless 7 - LL7241K downloadslast version with it 14 Aug 2026
    1 to 10 of 30123

    Often in the same modpacks

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

    ProjectTypeShareGrade
    The Lost CitiesAModin 99% of the modpacks with Lost SoulsAI Improvements: Performance TuningAModin 49% of the modpacks with Lost SoulsImmersive EngineeringCModin 47% of the modpacks with Lost SoulsBetterFpsCModin 44% of the modpacks with Lost SoulsInventory Tweaks [1.12 only]-Modin 44% of the modpacks with Lost SoulsFoamFixCModin 43% of the modpacks with Lost SoulsThermal FoundationCModin 42% of the modpacks with Lost SoulsSwingThroughGrassCModin 41% of the modpacks with Lost SoulsChiselCModin 41% of the modpacks with Lost SoulsCooking for BlockheadsAModin 41% of the modpacks with Lost Souls
    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·NeoForge1.21-5.0.11.21-5.0.1 · lostsouls-1.21-5.0.1.jarSends: None foundRequires:The Lost CitiesPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·Forge1.20-4.1.71.20-4.1.7 · lostsouls-1.20-4.1.7.jarSends: None foundRequires:The Lost CitiesPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.19.3·Forge3.0.13.0.1 · lostsouls-1.19.3-3.0.1.jarSends: None foundRequires:The Lost CitiesPassedOur checks found nothing harmful in this file. Its code was read too.
    1.19.2·Forge1.19-3.1.01.19-3.1.0 · lostsouls-1.19-3.1.0.jarSends: None foundRequires:The Lost CitiesPassedOur checks found nothing harmful in this file. Its code was read too.
    1.18.2·Forge1.18-2.0.51.18-2.0.5 · lostsouls-1.18-2.0.5.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.12.2·Forge1.12-1.1.41.12-1.1.4 · lostsouls-1.12-1.1.4.jarSends: None foundRequires:The Lost CitiesPassedOur checks found nothing harmful in this file. Its code was read too.
    1.12.1·Forge1.12-1.1.11.12-1.1.1 · lostsouls-1.12-1.1.1.jarSends: None foundRequires:The Lost CitiesPassedOur checks found nothing harmful in this file. Its code was read too.
    1.12·Forge1.0.01.0.0 · lostsouls-1.12-1.0.0.jarSends: None foundRequires:The Lost CitiesPassedOur checks found nothing harmful in this file. Its code was read too.

    40 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.1The latest file for its Minecraft version and loader·Forge1.20-4.1.71.20-4.1.7 · lostsouls-1.20-4.1.7.jar (main file)·13 Aug 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 46.8 KB
    1.21.1The latest file for its Minecraft version and loader·NeoForge1.21-5.0.11.21-5.0.1 · lostsouls-1.21-5.0.1.jar (main file)Beta·26 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 45.2 KB
    1.20.1·Forge1.20-4.1.61.20-4.1.6 · lostsouls-1.20-4.1.6.jar (main file)·26 Dec 2025PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 46.3 KB
    1.21.1·NeoForge1.21-5.0.01.21-5.0.0 · lostsouls-1.21-5.0.0.jar (main file)Beta·4 Dec 2025PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 45.2 KB
    1.20.1·Forge1.20-4.1.51.20-4.1.5 · lostsouls-1.20-4.1.5.jar (main file)·12 Sep 2025PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 46.3 KB
    1.20.1·Forge1.20-4.1.41.20-4.1.4 · lostsouls-1.20-4.1.4.jar (main file)·3 Aug 2025PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 46.1 KB
    1.20.1·Forge1.20-4.1.31.20-4.1.3 · lostsouls-1.20-4.1.3.jar (main file)·2 Aug 2025PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 45.7 KB
    1.20.1·Forge1.20-4.1.21.20-4.1.2 · lostsouls-1.20-4.1.2.jar (main file)·2 Aug 2025PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 45.7 KB
    1.20.1·Forge1.20-4.1.11.20-4.1.1 · lostsouls-1.20-4.1.1.jar (main file)·2 Aug 2025PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 45.1 KB
    1.20.1·Forge1.20-4.1.11.20-4.1.1 · lostsouls-1.20-4.1.1.jar (main file)·12 Jul 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthNot on CurseForgeDownload · Stable · 45.1 KB
    1.20.1·Forge1.20-4.1.11.20-4.1.1 · lostsouls-1.20-4.1.1.jar·12 Jul 2025PassedOur checks found nothing harmful in this file.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 45.1 KB
    1.20.1·Forge1.20-4.1.01.20-4.1.0 · lostsouls-1.20-4.1.0.jar (first file)·12 Aug 2024PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 44.5 KB
    1.19.2The latest file for its Minecraft version and loader·Forge1.19-3.1.01.19-3.1.0 · lostsouls-1.19-3.1.0.jar (first file)·12 Aug 2024PassedOur checks found nothing harmful in this file. Its code was read too. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 44.7 KB
    1.20.1·Forge1.20-4.0.41.20-4.0.4 · lostsouls-1.20-4.0.4.jar (first file)·7 May 2024PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 33.4 KB
    1.19.2·Forge1.19-3.0.41.19-3.0.4 · lostsouls-1.19-3.0.4.jar (first file)·7 May 2024PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 33.5 KB
    1.18.2The latest file for its Minecraft version and loader·Forge1.18-2.0.51.18-2.0.5 · lostsouls-1.18-2.0.5.jar (first file)·6 May 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 33.3 KB
    1.20.1·Forge1.20-4.0.31.20-4.0.3 · lostsouls-1.20-4.0.3.jar (first file)·16 Mar 2024PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 31.5 KB
    1.19.2·Forge1.19-3.0.31.19-3.0.3 · lostsouls-1.19-3.0.3.jar (first file)·16 Mar 2024PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 31.6 KB
    1.18.2·Forge1.18-2.0.41.18-2.0.4 · lostsouls-1.18-2.0.4.jar (first file)·16 Mar 2024PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 31.4 KB
    1.20.1·Forge1.20-4.0.21.20-4.0.2 · lostsouls-1.20-4.0.2.jar (first file)Beta·6 Mar 2024PassedOur checks found nothing harmful in this file. Same code on Modrinth and CurseForge.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 31.6 KB
    1 to 20 of 4012

    Quick fixes

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

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.2

    • LostSouls - 1.20-4.1.43 Aug 2025…LostSouls 1.20-4.1.4 - Fixed mob spawning using incorrect check to determine their…
    • LostSouls - 1.20-4.1.32 Aug 2025…1.20-4.1.3 - TexBlock fixed localization