
Cobblemon Expanded Server Hosting
by JonathansPlayroom
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
Order the server
The button on this page preselects the RAM this pack needs. It is online about a minute after checkout.
- 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
Press install and wait
The panel downloads the server pack, installs the loader and the right Java version, then restarts.
- 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
| Build | Released | Installable | ||
|---|---|---|---|---|
| v1.1.8-hotfix | 1.21.1 | Fabric | Jun 18, 2025 | Installable |
| v1.1.8 | 1.21.1 | Fabric | Jun 2, 2025 | Installable |
| v1.1.7 | 1.21.1 | Fabric | Apr 23, 2025 | Installable |
| v1.1.6Beta | 1.21.1 | Fabric | Apr 22, 2025 | Installable |
| v1.1.5Beta | 1.21.1 | Fabric | Apr 21, 2025 | Installable |
Your players need the same build in their launcher.
Frequently asked questions Cobblemon Expanded server questions
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Free, no accountReady to run Cobblemon Expanded with your group?
One-click install from the Modpacks tab once your server is ready