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Keystone Expansion Pufferfish's SkillsMinecraft mod for 1.21.11

MMO-style skill tree expansion for Puffish Skills, adding new progression categories like Combat, Mining, Exploration, Farming, Crafting, Building, Magic and Taming.

client and servernewest supported 1.21.11UtilityAdventureGame MechanicsLibrary
Latest version
1.1.9
Minecraft
1.21.1 to 1.21.11
Java
Java 21+
Loaders
NeoForge, Forge, Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
4.5k
Updated
9 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Keystone Expansion Pufferfish's Skills servers

One click and Keystone Expansion Pufferfish's Skills is installed with the right loader, on hardware built for it.

  • 1.21.11
  • NeoForge
  • 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 Keystone Expansion Pufferfish's Skills declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.11NeoForge, Forge, Fabric21+declared9 Dec 2025
1.21.10Fabric, NeoForge, Forge21+declared7 Oct 2025
1.21.9Forge, NeoForge, Fabric21+declared30 Sept 2025
1.21.8Forge, NeoForge, Fabric21+declared17 Jul 2025
1.21.7Fabric, Forge, NeoForge21+declared30 Jun 2025
1.21.6NeoForge, Forge, Fabric21+declared17 Jun 2025
1.21.5Fabric, NeoForge, Forge21+declared25 Mar 2025
1.21.4NeoForge, Forge, Fabric21+declared3 Dec 2024
1.21.3NeoForge, Forge, Fabric21+declared23 Oct 2024
1.21.1NeoForge, Fabric, Forge21+declared8 Aug 2024

Download

From Keystone Expansion Pufferfish's Skills’s own host. Nothing is re-hosted here.

1.1.9release20 Jan 2026

keystone_expansion_pufferfish_skills.jar · 65 KB · for 1.21.11

Download latest
ba8b9866f771…
Older versions20
  • 1.1.820 Jan 20261.21.1065 KB192 downloadsf8198671daee…Get
  • 1.1.720 Jan 20261.21.965 KB14 downloadsc61a91c7cbe4…Get
  • 1.1.620 Jan 20261.21.865 KB108 downloadsa35cfa79e803…Get
  • 1.1.520 Jan 20261.21.765 KB6 downloadsc7e24eb26c6c…Get
  • 1.1.420 Jan 20261.21.665 KB17 downloadsbd1a4f16e0a4…Get
  • 1.1.320 Jan 20261.21.565 KB41 downloadsbcd5b8a5cf5e…Get
  • 1.1.220 Jan 20261.21.465 KB48 downloadsed1082f842ac…Get
  • 1.1.120 Jan 20261.21.365 KB27 downloads9823bbd7cc35…Get
  • 1.1.020 Jan 20261.21.165 KB1.9k downloadsf919d2db285d…Get
  • 1.10.27 Jan 20261.21.1156 KB241 downloadsa5eac7b62e73…Get
  • 1.10.17 Jan 20261.21.1056 KB82 downloadsff16be65cca0…Get
  • 1.97 Jan 20261.21.956 KB12 downloads25a3f57c0f74…Get
  • 1.87 Jan 20261.21.856 KB19 downloads58096bda483f…Get
  • 1.77 Jan 20261.21.756 KB9 downloads4c2e3395aa8e…Get
  • 1.67 Jan 20261.21.656 KB13 downloadsdbbda442c1aa…Get
  • 1.57 Jan 20261.21.556 KB19 downloads0688fdb9c52e…Get
  • 1.47 Jan 20261.21.456 KB17 downloadsd8760810809b…Get
  • 1.27 Jan 20261.21.356 KB11 downloads3fe070af3aa4…Get
  • 1.127 Dec 20251.21.156 KB131 downloads3ac1db1fd943…Get
  • 1.027 Dec 20251.21.156 KB23 downloads3cf81b356b05…Get

Frequently asked

Does Keystone Expansion Pufferfish's Skills work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version Keystone Expansion Pufferfish's Skills 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 Keystone Expansion Pufferfish's Skills support?

Everything the author has declared, from 1.21.1 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 Keystone Expansion Pufferfish's Skills 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 Keystone Expansion Pufferfish's Skills support?

NeoForge, 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 Keystone Expansion Pufferfish's Skills?

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 Keystone Expansion Pufferfish's Skills 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 Keystone Expansion Pufferfish's Skills?

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 Keystone Expansion Pufferfish's Skills 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.

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Details from Modrinth, where the author last updated it on 20 Jan 2026. 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? .