Menu

mod

Don’t Open That. – Horror Mystery ModMinecraft mod for 1.21.5

All minecraft loot chests have a 20% chance to have THE MIMIC.

client and servernewest supported 1.21.5AdventureMobsGame MechanicsManagement
Latest version
1.0.0
Minecraft
1.18.2 to 1.21.5
Java
Java 21+
Loaders
Forge, Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
4.4k
Updated
5 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Don’t Open That. – Horror Mystery Mod servers

One click and Don’t Open That. – Horror Mystery Mod is installed with the right loader, on hardware built for it.

  • 1.21.5
  • Forge
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Don’t Open That. – Horror Mystery Mod declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.5Forge, Fabric21+declared25 Mar 2025
1.21.4Forge, Fabric21+declared3 Dec 2024
1.21.3Fabric, Forge21+declared23 Oct 2024
1.21.2Forge, Fabric21+declared22 Oct 2024
1.21.1Forge, Fabric21+declared8 Aug 2024
1.21Forge, Fabric21+declared13 Jun 2024
1.20.6Forge, Fabric21+declared29 Apr 2024
1.20.4Fabric, Forge17+declared7 Dec 2023
1.20.3Forge, Fabric17+declared4 Dec 2023
1.20.2Forge, Fabric17+declared20 Sept 2023
1.20.1Fabric, Forge17+declared12 Jun 2023
1.20Fabric, Forge17+declared2 Jun 2023
1.19.4Forge, Fabric17+declared14 Mar 2023
1.19.3Forge, Fabric17+declared7 Dec 2022
1.19.2Fabric, Forge17+declared5 Aug 2022
1.18.2Forge, Fabric17+declared28 Feb 2022

Download

From Don’t Open That. – Horror Mystery Mod’s own host. Nothing is re-hosted here.

1.0.0release17 May 2026

dontopenthat-forge-1.19.2-1.0.0.jar · 3 KB · for 1.19.2

Download latest
f866fd598b1c…
Older versions1
  • 2.0.01 Apr 20261.20.68 KB66 downloadsab4da0e1b196…Get

Frequently asked

Does Don’t Open That. – Horror Mystery Mod work on Minecraft 1.21.5?

Yes. 1.21.5 is the newest Minecraft version Don’t Open That. – Horror Mystery Mod 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 Don’t Open That. – Horror Mystery Mod support?

Everything the author has declared, from 1.18.2 up to 1.21.5. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Don’t Open That. – Horror Mystery Mod on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Don’t Open That. – Horror Mystery Mod support?

Forge, Fabric. 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 Don’t Open That. – Horror Mystery Mod?

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.

What licence is Don’t Open That. – Horror Mystery Mod under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Don’t Open That. – Horror Mystery Mod?

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 Don’t Open That. – Horror Mystery Mod safely?

Start with the author's page on Modrinth, 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.

Armor HiderHide or adjust the transparency of armor, glint, and offhand items - with full multiplayer sync. No dependencies required.GeckoLibA 3D animation library for entities, blocks, items, armor, and more!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+)

Details from Modrinth, where the author last updated it on 17 May 2026. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Not indexed yet. Score 54 against a threshold of 55. The page still exists and is still linked; it simply carries noindex until we hold more.

Is this information wrong or missing something? .