Cobblemon Pokerus

Cobblemon Pokerus

What if your Pokemon could get sick, but stronger for some reason?

by
379.3K Downloads
fabricneoforgegame-mechanics
Rent Server with this Mod

About this Mod

Pokerus

v1.7.3-1.1

Modrinth

CurseForge

GitHub

What if…

…your Pokémon could get sick, but stronger for some reason?

Features

  • Your Pokémon may contract Pokérus randomly when battling wild Pokémon.
  • Infected Pokémon in your party may affect other Pokémon in your party.
  • Pokémon become cured over time.
  • EV gains are boosted on infected Pokémon.

Dependencies

Testing

Wild Infections

After running the game at least once with the mod installed, open the config and modify wildInfectionChanceDenominator to 3, then run /pokerus reload. Change this back when you’re done testing, otherwise you will have a 100% chance to gain Pokérus after a battle.

Open the game, battle a wild Pokémon, and after the battle, one of your Pokémon should have Pokérus. You can confirm this by going to the Pokémon’s mark list.

EV Gain Boost

Note your Pokémon’s current EVs for Speed. Run /pokespawn magikarp and knock it out. Check your Pokémon’s new EVs, you should have received 2 instead of 1.

Spread to Party

Set chanceToSpread to 1 in the config and run /reload. Make sure you have both an infected Pokémon and a non-infected Pokémon on your team. Then engage in another battle with a wild Pokémon. A previously non-infected Pokémon should now be infected.

Cured

After (at max) four in-game days of battling with a Pokémon that has contracted Pokérus, check their EV page again and you should see that their Pokérus infection has been cured. They still gain boosted EVs, they just can’t spread it to other Pokémon on their team.

Player Help

Config Options

Addon Dev Help

Data Pack Help

Pokémon Custom Properties

Resource Pack Help

Translations

Resources

Known Issues

  • None. Why? Who’s asking? 👀

Roadmap

If you’d like to keep up with the work being done on the mod, please join the Discord and subscribe to notifications on the channel for this content. You can also keep track of the to do list available on the mod’s main page.

Feedback

If you have any questions or requests concerning the mod, or just want to drop by and say hi, visit us over at the Discord!

Support

If I've made something you enjoyed or helped you make something, please consider dropping a tip in the cup and mention how I helped if you'd like!

Available Versions

Cobblemon Pokerus 1.7.3-neoforge-1.1.0release
MC 1.21.1neoforge
February 3, 2026
Cobblemon Pokerus 1.7.3-fabric-1.1.0release
MC 1.21.1fabric
February 3, 2026
Cobblemon Pokerus 1.7.2-neoforge-1.1.0release
MC 1.21.1neoforge
January 28, 2026
Cobblemon Pokerus 1.7.2-fabric-1.1.0release
MC 1.21.1fabric
January 28, 2026
Cobblemon Pokerus 1.7.1-neoforge-1.0.0release
MC 1.21.1neoforge
December 13, 2025

How to Install Cobblemon Pokerus on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).

3

Install Mod

Open the mod browser in the dashboard and search for "Cobblemon Pokerus". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricneoforge

Minecraft Versions

1.21.1

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Cobblemon Pokerus server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Cobblemon Pokerus compatible with fabric and neoforge?

Cobblemon Pokerus officially supports fabric, neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Cobblemon Pokerus – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Cobblemon Pokerus consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Cobblemon Pokerus with just one click on your server.

Recommended RAM
4 GBfrom €5.2/mo
Minimum 3 GB | per 8 players
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

1.21.1