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Cobblemon Expanded
Minecraft modpack · Modrinth

Cobblemon Expanded Server Hosting

by JonathansPlayroom

FabricMinecraft 1.21.1Java 21
How install works

One-click install from the Modpacks tab once your server is ready

Recommended RAM
6 GB
Latest build
v1.1.8-hotfixJun 2025
Mod loader
Fabric1.21.1
Downloads
307KModrinth

Cobblemon Expanded is JonathansPlayroom's take on Cobblemon, built on Fabric for Minecraft 1.21.1. The base mod already gives you Pokémon roaming the overworld, turn-based battles and a PC for your catches. This pack fills the gaps players notice once the novelty fades: towns full of Pokémon-themed buildings, Gym Leaders to challenge, Mega Evolutions for your strongest team members and Pokémon you can actually ride across the map.

Around 125 mods keep it on the lighter side. Most of that list supports the catching and battling loop instead of piling tech or magic on top, so an evening is about exploring biomes for new species, shaping a team, then heading into a town to take on a Gym Leader. Plushies and decorative blocks give collectors something to show off back at base.

It suits friend groups who want a Pokémon adventure inside Minecraft without a sprawling kitchen-sink pack, and families looking for a server where younger players can catch and battle side by side. If you have played plain Cobblemon and wished it felt more like a complete game, this is the step up.

Hosting Cobblemon Expanded

RAM and what drives load

We recommend 6 GB for this pack, which suits a group of around six. The pressure comes less from the mod count than from the Pokémon themselves: every wild Pokémon is a living entity with its own AI, and spawns follow each player into new biomes. Players scattered across the map multiply that load, and fast riders pull in fresh chunks quickly. If the tick rate dips, profile the slow moment with spark and see whether entity ticking dominates.

/spark profiler start
/spark profiler stop

Pregenerating the world

Pokémon Towns are placed during world generation, so every unexplored chunk a rider crosses has to be generated and checked for towns on the spot. That is where most lag spikes on a fresh world come from. Pregenerating a radius around spawn before your group logs in removes that cost. Chunky works on Fabric 1.21.1, so add it and run:

/chunky radius 3000
/chunky start

Let it finish before you open the server to players.

Java version and updates

Minecraft 1.21.1 needs Java 21 on the server. Take a backup before moving to a new build such as 1.1.8-hotfix: Cobblemon keeps every player's party and PC boxes in the world folder, so a rollback hands everyone their team back. Update the server and every client to the exact same build, because mismatched versions usually end in a registry error at login. Read the changelog for removed mods, since blocks and items from a dropped mod vanish from the world.

Version

Fabric on Minecraft 1.21.1

The pack runs on Fabric for 1.21.1, so the server needs Java 21.

RAM

6 GB for a group of six

Around 125 mods put it in the medium weight class, and 6 GB covers a typical friend group.

Battles

Gym Leaders and Mega Evolutions

Towns, Gym Leaders and Mega Evolutions give your team goals beyond simply catching everything.

How to install Cobblemon Expanded on your server

  1. 1

    Order the server

    The button on this page preselects the RAM this pack needs. It is online about a minute after checkout.

  2. 2

    Open the Modpacks tab and search Cobblemon Expanded

    Open the Modpacks tab in the panel, search for Cobblemon Expanded, pick the listing by JonathansPlayroom and choose build 1.1.8-hotfix.

  3. 3

    Press install and wait

    The panel downloads the server pack, installs the loader and the right Java version, then restarts.

  4. 4

    Join with the same build

    Everyone installs the same pack build in their launcher, then connects to the address on the Overview tab.

Available builds

BuildReleasedInstallable
v1.1.8-hotfixJun 18, 2025Installable
v1.1.8Jun 2, 2025Installable
v1.1.7Apr 23, 2025Installable
v1.1.6BetaApr 22, 2025Installable
v1.1.5BetaApr 21, 2025Installable

Your players need the same build in their launcher.

Frequently asked questions Cobblemon Expanded server questions