data pack
OneBlock 1.21.11 (Mounts of Mayhem)Minecraft data pack for 1.21.11
Since 2022 | OneBlock is a adventure map with alot of Fun. | 1.21.11 | Mounts of Mayhem is Live! | [Continuation of IJAMinecraft's Oneblock!] | {This is a Datapack of OneBlock Reborn Map.}
- Latest version
- 1.2.4
- Minecraft
- 1.19 to 1.21.11
- Java
- Java 21+
- Loader
- Data pack
- Licence
- LicenseRef-All-Rights-Reserved
- Downloads
- 217.4k
- Updated
- 9 mo ago
- Available on
- Modrinth
PartnerHost OneBlock 1.21.11 (Mounts of Mayhem) servers
One click and OneBlock 1.21.11 (Mounts of Mayhem) is installed with the right loader, on hardware built for it.
- 1.21.11
- Data pack
- One click install
- Version matched
- Automatic backups
- NVMe SSD
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version OneBlock 1.21.11 (Mounts of Mayhem) declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21.11 | Data pack | 21+ | declared | 9 Dec 2025 |
| 1.21.10 | Data pack | 21+ | declared | 7 Oct 2025 |
| 1.21.9 | Data pack | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Data pack | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Data pack | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Data pack | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Data pack | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Data pack | 21+ | declared | 3 Dec 2024 |
| 1.21.3 | Data pack | 21+ | declared | 23 Oct 2024 |
| 1.21.2 | Data pack | 21+ | declared | 22 Oct 2024 |
| 1.21.1 | Data pack | 21+ | declared | 8 Aug 2024 |
| 1.21 | Data pack | 21+ | declared | 13 Jun 2024 |
| 1.19.3 | Data pack | 17+ | declared | 7 Dec 2022 |
| 1.19.2 | Data pack | 17+ | declared | 5 Aug 2022 |
| 1.19.1 | Data pack | 17+ | declared | 27 Jul 2022 |
| 1.19 | Data pack | 17+ | declared | 7 Jun 2022 |
Download
From OneBlock 1.21.11 (Mounts of Mayhem)’s own host. Nothing is re-hosted here.
OneBlock_Reborn.zip · 0.4 MB · for 1.21.11
12e5ce607f47…Older versions9Hide older versions
- 1.2.35 Oct 20251.21.9, 1.21.100.4 MB27.3k downloads
c4d9ad607ef9…Get - 1.2.217 Sept 20251.21.7, 1.21.80.3 MB8.3k downloads
2ae04952761e…Get - 1.2.125 Aug 20251.21.6, 1.21.7, 1.21.80.3 MB7.6k downloads
94f41ab05905…Get - 1.2.018 Aug 20251.21.50.3 MB3.4k downloads
d246b5b366bc…Get - 1.1.912 May 20251.21.40.3 MB24.6k downloads
de1f2bcc7ffc…Get - 1.1.815 Feb 20251.21.2, 1.21.30.3 MB12.3k downloads
f0ef6ee632d7…Get - 1.1.76 Jan 20251.21.2, 1.21.30.3 MB3.2k downloads
fb538bae8b04…Get - 1.1.627 Aug 20241.21, 1.21.10.3 MB39.3k downloads
123089330f3c…Get - 1.0.912 Mar 20231.19, 1.19.1, 1.19.2, 1.19.30.2 MB13.0k downloads
3c50165cd277…Get
Frequently asked
Does OneBlock 1.21.11 (Mounts of Mayhem) work on Minecraft 1.21.11?
Yes. 1.21.11 is the newest Minecraft version OneBlock 1.21.11 (Mounts of Mayhem) 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 OneBlock 1.21.11 (Mounts of Mayhem) support?
Everything the author has declared, from 1.19 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install OneBlock 1.21.11 (Mounts of Mayhem) on the client or the server?
The server only. Players join with an ordinary Minecraft client and install nothing.
Which loader does OneBlock 1.21.11 (Mounts of Mayhem) need?
Data pack. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for OneBlock 1.21.11 (Mounts of Mayhem)?
Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the data pack itself.
What licence is OneBlock 1.21.11 (Mounts of Mayhem) 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 OneBlock 1.21.11 (Mounts of Mayhem)?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the data pack 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 OneBlock 1.21.11 (Mounts of Mayhem) safely?
From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .