Poly-Craft

Modpack vanilla+ completly server-side for minecraft 1.21.11

by kaeylos
39 Downloads
0 Followers
fabricMC 1.21.11adventuremultiplayer

About this Modpack

PolyCraft

A server-side Fabric modpack for a richer vanilla+ multiplayer experience — vanilla clients can join, no client install required.

Built for small friend groups and long-term SMP worlds, with a stronger focus on exploration, cozy progression, and lots of subtle quality-of-life upgrades.

✨ What's included

⚡ Quick install

  1. Download the latest PolyCraft release.
  2. Start it like a normal Fabric server, accept EULA, and join with a vanilla client.

🧩 Recommended client mods

You don't need anything on the client, but these make the experience noticeably better:

A dedicated client companion pack may come later with these preconfigured.

❓ FAQ

  • Do players need to install mods? No — vanilla clients can join.

📋 Compatibility

  • Minecraft 1.21.11 on Fabric
  • Fully server-side — vanilla clients can join without installing anything
  • Should work well alongside most client QoL mods

Available Versions

Poly-Craft 2.0.0alpha
MC 1.21.11fabric31 downloads
March 22, 2026
Poly-Craft 1.0.0alpha
MC 1.21.11fabric8 downloads
March 6, 2026

How to Set Up a Poly-Craft Server

1

Order Server

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

2

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "Poly-Craft" and click "Install". The fabric loader and Minecraft 1.21.11 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

Poly-Craft server crashes or won't start – what to do?

Most common causes: insufficient RAM or wrong fabric 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 Poly-Craft 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 Poly-Craft without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.11). 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.

Poly-Craft 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 Poly-Craft 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
Unsupported

Supported Versions

1.21.11

Start your Poly-Craft Server now

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

Configure Server →