Can Bedrock players join a Cobblemon server?

No. Cobblemon requires a mod on the client, and Geyser only bridges Bedrock players to servers a plain Java client could already join. There is no Bedrock version of Cobblemon and no bridge that adds its Pokemon to Bedrock clients. Everyone needs Minecraft Java Edition with the modpack installed. If crossplay matters more than the pack, a Paper server with Geyser is the route.

How do I change the shiny rate?

Open `config/cobblemon/main.json` and edit `shinyRate`. The default is 8192.0 and it works as a denominator, so it means roughly one in 8192. Lowering it to 1024.0 makes shinies eight times more common; raising it makes them rarer. Restart the server afterwards. The same file holds `maxPokemonLevel`, `experienceMultiplier` and the PC box count if you want to adjust those at the same time.

How much RAM does a Cobblemon server need?

5 GB handles a group of about six. Cobblemon is a small pack, but Pokemon are entities and pastured ones keep ticking whether anyone is nearby or not, so the cost tracks player count and how many Pokemon each person has out. If it gets tight, lowering `pokemonPerChunk` and shortening the despawn timers gives back more headroom than adding another gigabyte.

Why is my server lagging with lots of Pokemon around?

Too many live entities, usually. In `config/cobblemon/main.json`, lower `pokemonPerChunk` from 1.0, reduce `maximumSpawnsPerPass` from 8, and shorten `despawnerMaxAgeTicks` so wild Pokemon clean themselves up sooner. Also check how many pastures your players are running, since each pastured Pokemon is a persistent entity. Those changes usually matter more than any server.properties setting here.

Can I add mods or change which Pokemon spawn?

Yes to both, and they are different jobs. Extra Fabric mods go in `mods/` and have to be given to every player as well. Spawns are not configuration: they are datapack JSON under `data/cobblemon/spawn_pool_world/`, so changing what appears where means writing or installing a datapack in the world's `datapacks` folder. That part is server-side only, so players do not need anything extra.

Will updating break our Pokemon?

Nothing in the documented breaking changes has removed stored Pokemon, but updates have broken other things: 1.8 reset everyone's advancement progress apart from the starter, and 1.7 changed the default PC box count and removed some NPC presets. Take a backup first, which the panel offers during the update, and have your players update their client on the same day so mod versions match.

Minecraft modpack · Modrinth

Cobblemon Server Hosting

by Cobbled Studios

FabricMinecraft 1.21.1Java 21

How install works

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

Recommended RAM: 5 GB
Latest build: v1.8.1Sep 2026
Mod loader: Fabric1.21.1
Downloads: 10.6MModrinth

Cobblemon is the official modpack for the Cobblemon mod, and it is the lightest pack on this list by a wide margin. Around 75 entries, most of them supporting mods and performance fixes, wrapped around one very well-made core mod on Fabric 1.21.1.

The mod itself is the reason people pick it over the older alternatives. Pokemon spawn naturally in biomes that suit them, you catch them, and battles run on Pokemon Showdown mechanics rather than a simplified imitation, so type matchups, abilities and move effects behave the way competitive players expect. Around that sit the systems that make it a Minecraft mod and not a menu: a Pokedex you fill by scanning, pastures where stored Pokemon roam around your base instead of sitting in a box, berry farming with mutations, fossil excavation and revival, and riding.

It is also genuinely open source under the MPL, which is why the modding scene around it moved so fast. For a server that translates into something practical: the community add-ons are plentiful and the configuration is documented. It suits friend groups who want a relaxed catching and battling world rather than a survival grind.

Hosting Cobblemon

5 GB, and where the load actually comes from

Cobblemon is light for a modpack but it is not light on entities, and that is the distinction to keep in mind. Every wild Pokemon is a living entity, and pastured ones are persistent entities that keep ticking near each player's base, so cost grows with how many people are playing and how many Pokemon they have out, not with world size. 5 GB covers a group of around six comfortably.

The settings people actually change

Server configuration lives in config/cobblemon/main.json. The values worth knowing, with their defaults:

shinyRate: 8192.0
maxPokemonLevel: 100
experienceMultiplier: 2.0
defaultBoxCount: 40

shinyRate is a denominator, so a smaller number means more shinies. Note the box count default changed from 30 to 40 in 1.7, and some guides still quote the old value.

Starters are separate. Set exportStarterConfig to true, start the server once, and it writes config/cobblemon/starters.json for you to edit.

Tuning spawns and entity counts

If you need to bring entity numbers down, these are the levers, all in the same file:

pokemonPerChunk: 1.0
maximumSpawnsPerPass: 8
minimumDistanceBetweenEntities: 8.0
despawnerFarDistance: 96
despawnerMaxAgeTicks: 3600

Lowering pokemonPerChunk and shortening despawnerMaxAgeTicks does more for a busy server than adding RAM. What species appear where is not in the config at all: spawn definitions are datapack JSON under data/cobblemon/spawn_pool_world/, so custom spawns go in a datapack.

Commands, Java and updating

The commands are Cobblemon's own, not the ones from other Pokemon mods: /givepokemon, /spawnpokemon, /pokemonedit, /healpokemon and /pc. Permission nodes follow cobblemon.command.<name>, with .self and .other variants where it matters.

Minecraft 1.21.1 means Java 21, selected at install. Updates have been kind to stored Pokemon so far, but 1.8 reset advancement progress for everyone, so take the backup the panel offers before you move builds.

Entities

Pastures tick per player

Stored Pokemon left in pastures stay loaded and active, so load scales with players rather than map size.

Config

One file for the rules

shinyRate, maxPokemonLevel and box count all live in config/cobblemon/main.json and take effect after a restart.

Bedrock

Java Edition only

Cobblemon needs a client mod, so Bedrock players cannot join through Geyser or any other bridge.

How to install Cobblemon 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
In the panel's Modpacks tab, search for Cobblemon and pick Cobblemon Official Modpack [Fabric] on Modrinth, then choose build 1.8.1.
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	Minecraft	Loader	Released	Installable
v1.8.1	1.21.1	Fabric	Sep 13, 2026	Installable
v1.8	1.21.1	Fabric	Sep 6, 2026	Installable
v1.7.3	1.21.1	Fabric	Jan 31, 2026	Installable
v1.7.2	1.21.1	Fabric	Jan 25, 2026	Installable
v1.7.1	1.21.1	Fabric	Nov 29, 2025	Installable