data pack

CobbleBuilds: Leaders [Cobblemon Addon]Minecraft data pack for 1.21.3

Find Gyms, defeat Gym Leaders, and aquire Gym Badges to become the best there ever was

server onlynewest supported release 1.21.3Adventure Mobs Game Mechanics Worldgen

Latest version: 0.1.2-hf.2+mod
Minecraft: 1.21 to 1.21.3
Works with: Quilt, NeoForge, Forge, Fabric
Licence: GPL-3.0-or-later
Downloads: 76.7k
Updated: 3 mo ago
Available on: Modrinth

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Deploy a server with CobbleBuilds: Leaders [Cobblemon Addon] already added to the world, on hardware built for it.

1.21.3
Data pack
Quilt
NeoForge
Forge

One click install
Version matched
Automatic backups
NVMe SSD

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Screenshots

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

Minecraft versions

Every version CobbleBuilds: Leaders [Cobblemon Addon] declares support for, newest first, with the Java runtime that version needs.

Other data packs

Minecraft	Through	Java	Evidence	Released
1.21.3	Data pack, Quilt, NeoForge, Forge, Fabric	21+	declared	23 Oct 2024
1.21.2	Data pack, Fabric, Forge, NeoForge, Quilt	21+	declared	22 Oct 2024
1.21.1	Quilt, Data pack, Fabric, Forge, NeoForge	21+	declared	8 Aug 2024
1.21	Data pack, Quilt, NeoForge, Forge, Fabric	21+	declared	13 Jun 2024

Download

From CobbleBuilds: Leaders [Cobblemon Addon]’s own host. Nothing is re-hosted here.

For Minecraft 1.21.3

Choose the loader you use before downloading.

Fabric, Forge, NeoForge, Quilt
0.1.2-hf.2+mod · 17 Jul 2026
Multiple loaders are listed; verify the file before downloading.
Choose file on publisher ↗
Loader not listed
0.1.2-hf.2 · 17 Jul 2026 · CobbleBuilds v0.1.2-hf.2.zip
Get release

Most recently published release

0.1.2-hf.2+modalpha17 Jul 2026

cobblebuilds-leaders-0.1.2-hf.2.jar · 3.2 MB · for 1.21.3, 1.21.2, 1.21.1, 1.21 · Fabric, Forge, NeoForge, Quilt

Choose file on publisher ↗

2aa881aff25b…

Older versions19

0.1.2-hf.217 Jul 20261.21.3, 1.21.2, 1.21.1, 1.210.8 MB18b30f16b69b…Get
0.1.2-hf.1+mod1 Jul 20261.21.3, 1.21.2, 1.21.1, 1.213.2 MB871545a23073…Choose file on publisher ↗
0.1.2-hf.11 Jul 20261.21.3, 1.21.2, 1.21.1, 1.210.8 MB4579fd2fce37…Get
0.1.2+mod18 Jun 20261.21.3, 1.21.2, 1.21.1, 1.213.2 MBf357a3586d75…Choose file on publisher ↗
0.1.218 Jun 20261.21.3, 1.21.2, 1.21.1, 1.210.8 MB09f4d677e9cd…Get
0.1.1-hf.1+mod30 May 20261.21.3, 1.21.2, 1.21.1, 1.213.2 MB1148f2aa0224…Choose file on publisher ↗
0.1.1-hf.130 May 20261.21.3, 1.21.2, 1.21.1, 1.210.8 MBdbce141150ca…Get
0.1.1+mod16 Feb 20261.21.3, 1.21.2, 1.21.1, 1.213.2 MBb05b045423a7…Choose file on publisher ↗
0.1.116 Feb 20261.21.3, 1.21.2, 1.21.1, 1.210.8 MBf2944c6d4b22…Get
0.1.0+mod26 Jan 20261.21.3, 1.21.2, 1.21.1, 1.213.2 MBabcf64352a05…Choose file on publisher ↗
0.1.026 Jan 20261.21.3, 1.21.2, 1.21.1, 1.210.8 MBf60de874a254…Get
0.0.3+mod31 May 20251.21.3, 1.21.2, 1.21.1, 1.212.7 MB0c61f2f61324…Choose file on publisher ↗
0.0.331 May 20251.21.3, 1.21.2, 1.21.1, 1.210.4 MB8c3e6cf41fb7…Get
0.0.2+mod29 May 20251.21.3, 1.21.2, 1.21.1, 1.212.7 MBd93dfc55ee90…Choose file on publisher ↗
0.0.229 May 20251.21.3, 1.21.2, 1.21.1, 1.210.4 MB663b7bde14ae…Get
0.0.1+mod28 May 20251.21.3, 1.21.2, 1.21.1, 1.212.7 MB10311c1fadcf…Choose file on publisher ↗
0.0.128 May 20251.21.3, 1.21.2, 1.21.1, 1.210.4 MBf701e154c481…Get
0.0.0+mod27 May 20251.21.3, 1.21.2, 1.21.1, 1.212.4 MBf3ce141164fb…Choose file on publisher ↗
0.0.021 May 20251.21.3, 1.21.2, 1.21.1, 1.210.3 MB608b5de8b5a6…Get

Frequently asked

Does CobbleBuilds: Leaders [Cobblemon Addon] work on Minecraft 1.21.3?

Yes. 1.21.3 is the newest Minecraft version CobbleBuilds: Leaders [Cobblemon Addon] 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 CobbleBuilds: Leaders [Cobblemon Addon] support?

Everything the author has declared, from 1.21 up to 1.21.3. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install CobbleBuilds: Leaders [Cobblemon Addon] on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

What licence is CobbleBuilds: Leaders [Cobblemon Addon] under?

GPL-3.0-or-later, 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 CobbleBuilds: Leaders [Cobblemon Addon]?

Data packs install per world: put the downloaded file in that world's datapacks folder and run /reload, or add it when creating the world. No loader is involved. On a server, the world folder lives next to the server jar.

Where do I download CobbleBuilds: Leaders [Cobblemon Addon] 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. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

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

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