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Monsters in the ClosetMinecraft mod for 1.21.9

Highlights mobs that are preventing you from sleeping

newest supported 1.21.9Cosmetic
Latest version
[1.21.9] Version 1.0.3
Minecraft
1.16 to 1.21.9
Java
Java 21+
Loaders
Fabric, NeoForge
Licence
not stated
Downloads
3.8M
Updated
11 mo ago
Available on
CurseForge

Minecraft versions

Every version Monsters in the Closet declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.9Fabric, NeoForge21+declared30 Sept 2025
1.21.8Fabric, NeoForge21+declared17 Jul 2025
1.21.7Fabric, NeoForge21+declared30 Jun 2025
1.21.6Fabric, NeoForge21+declared17 Jun 2025
1.21.5Fabric, NeoForge21+declared25 Mar 2025
1.21.4Fabric, NeoForge21+declared3 Dec 2024
1.21.3Fabric, NeoForge21+declared23 Oct 2024
1.21.2Fabric, NeoForge21+declared22 Oct 2024
1.21.1NeoForge, Fabric21+declared8 Aug 2024
1.21Fabric, NeoForge21+declared13 Jun 2024
1.20.5Fabric, NeoForge21+declared23 Apr 2024
1.20.4Fabric, NeoForge17+declared7 Dec 2023
1.20.3Fabric, NeoForge17+declared4 Dec 2023
1.20.2NeoForge, Fabric17+declared20 Sept 2023
1.20.1Fabric, NeoForge17+declared12 Jun 2023
1.20Fabric, NeoForge17+declared2 Jun 2023
1.19.4Fabric, NeoForge17+declared14 Mar 2023
1.19.3Fabric, NeoForge17+declared7 Dec 2022
1.19.2Fabric, NeoForge17+declared5 Aug 2022
1.19.1Fabric, NeoForge17+declared27 Jul 2022
1.19Fabric, NeoForge17+declared7 Jun 2022
1.18.2Fabric, NeoForge17+declared28 Feb 2022
1.18.1Fabric, NeoForge17+declared10 Dec 2021
1.18NeoForge, Fabric17+declared30 Nov 2021
1.17Fabric, NeoForge16+declared8 Jun 2021
1.16.5Fabric, NeoForge8+declared14 Jan 2021
1.16.4Fabric, NeoForge8+declared29 Oct 2020
1.16.3Fabric, NeoForge8+declared10 Sept 2020
1.16.2Fabric, NeoForge8+declared11 Aug 2020
1.16.1Fabric, NeoForge8+declared24 Jun 2020
1.16Fabric, NeoForge8+declared23 Jun 2020

Download

From Monsters in the Closet’s own host. Nothing is re-hosted here.

[1.21.9] Version 1.0.3release2 Oct 2025

monsters-in-the-closet-1.0.3+1.21.9.jar · 0.0 MB · for 1.21.9

Download latest
024a1e1ffaab…
Older versions16
  • [1.21.9 Neo] Version 1.0.32 Oct 20251.21.90.0 MBb44ba425bf78…Get
  • [1.21.8 Neo] Version 1.0.32 Oct 20251.21.6, 1.21.7, 1.21.80.0 MB7a287f0ec242…Get
  • [1.21.8] Version 1.0.329 Mar 20251.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6 +2 more0.0 MB9.1k downloads8c7cf665af8b…Get
  • [1.21.5 Neo] Version 1.0.328 Mar 20251.21.50.0 MB596 downloads3d571d848450…Get
  • [1.21.4 Neo] Version 1.0.328 Mar 20251.21.2, 1.21.3, 1.21.40.0 MB156 downloadsb6d08ff0539c…Get
  • [1.21 Neo] Version 1.0.313 Sept 20241.21, 1.21.10.0 MB3.9k downloads1baf3e2a2e45…Get
  • [1.21] Version 1.0.325 Jul 20241.21, 1.21.10.0 MB838.8k downloadsb54bbb904c17…Get
  • [1.20.5] Version 1.0.319 Apr 20241.20.50.0 MB468 downloads617b66b9e8a1…Get
  • [1.20] Version 1.0.31 Jun 20231.20, 1.20.1, 1.20.2, 1.20.3, 1.20.40.0 MB383.3k downloads0d68812fe24b…Get
  • [1.19] Version 1.0.326 Oct 20221.19, 1.19.1, 1.19.2, 1.19.3, 1.19.40.0 MB29.7k downloads4379d6c2b9d9…Get
  • [1.18] Version 1.0.35 Mar 20221.18, 1.18.1, 1.18.20.0 MB10.6k downloads13f57612fb03…Get
  • [1.17] Version 1.0.210 Jun 20211.170.0 MB13.4k downloads6902fda135d1…Get
  • [1.16] Version 1.0.210 Jun 20211.16.2, 1.16.3, 1.16.4, 1.16.50.0 MB6.3k downloadsc9b6a837e007…Get
  • [1.17] Version 1.0.18 Jun 20211.170.0 MB348 downloadscaadd1a5821b…Get
  • [1.16] Version 1.0.128 May 20211.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4 +1 more0.0 MB1.5k downloadsb37928bea4e2…Get
  • [1.16] Version 1.0.018 Dec 20201.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4 +1 more0.0 MB36.2k downloadsfe9ebba9c912…Get

Frequently asked

Does Monsters in the Closet work on Minecraft 1.21.9?

Yes. 1.21.9 is the newest Minecraft version Monsters in the Closet declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Monsters in the Closet support?

Everything the author has declared, from 1.16 up to 1.21.9. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does Monsters in the Closet support?

Fabric, NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Monsters in the Closet?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

How do I install Monsters in the Closet?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Monsters in the Closet safely?

Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)Collective🎓 Collective is a shared library with common code for all of Serilum's mods.ComfortsAdds sleeping bags and hammocks for, respectively, portability and turning day to night, without setting new spawns. Comes in 16 different colors!

Last checked 1 mo ago against CurseForge. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .