Cobblemon - Union Room

Cobblemon - Union Room

Cobblemon modpack focused on exploration and social interaction.

by sixgarden
209 Downloads
0 Followers
neoforgeMC 1.21.1adventurekitchen-sinkmultiplayer

Screenshots

Union Room

About this Modpack

Union Room - A Cobblemon Modpack

A personal project of mine that massively exploded in scope.

A Cobblemon modpack based on my vision of the best multiplayer Cobblemon experience possible.

Focused on exploration, immersion, and social interaction. Includes revamped terrain generation, dozens of structures, many atmospheric and immersive additions, and all battle gimmicks.

Features

  • Mega Evolutions, Z Moves, Dynamax and Gigantamax, Terastalization
  • Revamped terrain generation with Terralith, Biomes O' Plenty, and Oh the Biomes We've Gone
  • Seasons, new water animations, and new environment-dependent atmospheric sounds
  • Create Mod integration to automate anything
  • Depressed Gengar
  • Rideable Pokemon via Ride On
  • Pokemon Fight or Flight and LivelierPokemon integration (this pack removes most vanilla mobs, remove In Control if you want to play with them)
  • Legendary Pokemon, their respective structures and items
  • Alpha Pokemon
  • Sirdoof??
  • Music
  • Gambling

System Requirements and Performance

8GB RAM recommended, 4GB RAM minimum (important)
Any less and you should expect noticable stuttering.

Mid to high-end systems should enable shaders and Distant Horizons for aesthetics.

If you adjust your shader settings or install a new one, I recommend you turn realtime shadows up to High. This prevents issues with the bushy leaves.

Server Performance

Pregenerating chunks with Chunky is highly recommended. Chunky is prepackaged in the modpack and server pack.

The amount of RAM your server requires depends heavily on your system and number of players, so please do your own testing and adjust as required. I personally have had the best results with 6 - 8GB.

Multiplayer

Server Pack

For multiplayer, place these files into your dedicated server.

Progression

As of 2.0.5, quests has been added to the modpack. Please follow the instructions and download the additional mods when prompted to access them. They are not strictly required to play with the pack, but recommended. If you want to remove them, remove the relevant mods from your server as well to prevent incompatabilities.

You can reach me as sixgarden on Discord

Special thanks to theblindbandit6 for allowing me to use Ukelele Pichu

https://modrinth.com/datapack/cobblemon-ukulele-pichu-addon

Available Versions

2.1brelease
MC 1.21.1neoforge86 downloads
November 4, 2025
2.1release
MC 1.21.1neoforge25 downloads
October 30, 2025
2.0.5brelease
MC 1.21.1neoforge24 downloads
October 26, 2025
2.0.5release
MC 1.21.1neoforge14 downloads
October 25, 2025
2.0.4release
MC 1.21.1neoforge39 downloads
October 7, 2025

How to Set Up a Cobblemon - Union Room Server

1

Order Server

Choose at least 6 GB RAM (8 GB recommended for Cobblemon - Union Room). Based on player count: per 5 players.

2

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "Cobblemon - Union Room" and click "Install". The neoforge loader and Minecraft 1.21.1 are configured automatically.

3

Start Server & Play

Start the server – all mods are loaded automatically. Share the server IP with friends and play together!

Frequently Asked Questions

Cobblemon - Union Room server crashes or won't start – what to do?

Most common causes: insufficient RAM or wrong neoforge loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 8 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.

How much RAM does a Cobblemon - Union Room server really need?

Minimum 6 GB, recommended 8 GB for stable performance. per 5 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €12/month).

Can I add custom mods to Cobblemon - Union Room without conflicts?

Yes, but check compatibility: only use mods for the same loader (neoforge) and same Minecraft version (1.21.1). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.

Cobblemon - Union Room server lagging – performance tips

1) Increase RAM to 8 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.

Rent Cobblemon - Union Room Server

Start your own server with automatic modpack installation.

Recommended RAM:
8 GB(min. 6 GB)
From 12.00 / month
Create Server Now
1-Click Modpack Install
NVMe SSD Storage
DDoS Protection included
Automatic Backups

Details

License
MIT License
Server-side
Required
Client-side
Required

Supported Versions

1.21.1

Start your Cobblemon - Union Room Server now

From €12.00/month with 8 GB RAM for the best performance.

Configure Server →