
The Unofficial Rats Modpack
A pre-optimised way to play the Rats mod!
Screenshots

About this Modpack
Have you wanted to play Rats, but don't know how? Do you like NeoForge, but hate managing mods? With The Unofficial Rats Modpack, you can play this excellent (and somewhat unsettling) mod smoothly and easily!
This modpack is based off of the brilliant modpack Hammer. If you like (Neo)Forge, but want an optimised experience, check it out!
Also includes JEI.
Available Versions
How to Set Up a The Unofficial Rats Modpack Server
Order Server
Choose at least 6 GB RAM (8 GB recommended for The Unofficial Rats Modpack). Based on player count: per 5 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "The Unofficial Rats Modpack" and click "Install". The neoforge loader and Minecraft 1.20.1 are configured automatically.
Start Server & Play
Start the server – all mods are loaded automatically. Share the server IP with friends and play together!
Frequently Asked Questions
The Unofficial Rats Modpack 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 The Unofficial Rats Modpack 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 The Unofficial Rats Modpack without conflicts?
Yes, but check compatibility: only use mods for the same loader (neoforge) and same Minecraft version (1.20.1). 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.
The Unofficial Rats Modpack 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.
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Rent The Unofficial Rats Modpack Server
Start your own server with automatic modpack installation.
Supported Versions
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From €12.00/month with 8 GB RAM for the best performance.
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