Poly-Craft
Modpack vanilla+ completly server-side for minecraft 1.21.11
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
World generation & biomes
Blooming Biosphere, Geophilic, This Rocks!, Incendium, Nullscape, Subsurface, Unnamed Sea — the Overworld, Nether, and End all get more variety without losing the vanilla feel.Structures & exploration
ChoiceTheorem's Overhauled Village, Towns and Towers, Explorify, Dungeons+, Moog's Voyager Structures, Philip's Ruins — more villages, ruins, and dungeons to discover on every trip.Vanilla+ mobs & immersion
Friends & Foes, Tom's Mobs, More Mobs, Spawn Animations, danse - player gestures, mini-vfx — more life, more personality, and better moment-to-moment immersion.Building, storage & progression
Armor Stand Editor, Jake's Build Tools, Storage Pots, Backpacks!, Naturally Trimmed, Trimmable Tools, Audaki Cart Engine — better tools for building, organizing, traveling, and showing off your style.Food & farming
Farmer's Delight, Rustic Delight, Brewery, Gone Fishing, More Delight — cooking, farming, brewing, and fishing all feel more rewarding.Gameplay additions & small vanilla tweaks
Diversity, Glide Away, Down But Not Out, Tax Free Levels, Bottle Your Xp, Dismount Entity, Grabby Mobs, Snowballs Freeze Mobs, Spiders Produce Webs, Villager Names, Vanilla Pings, Storage Pots — lots of subtle upgrades that make the server feel smoother, livelier, and easier to play without drifting away from vanilla.Server quality of life
Keep your items with Universal Graves, trade with Universal Shops, skip night with SleepWarp, move chests with Haul, sort chests with Inventory Sorter, and sit anywhere with FSit.Performance
Lithium, FerriteCore, ServerCore, Noisium, Concurrent Chunk Management Engine, Very Many Players, Alternate Current, Structure Layout Optimizer, Slumber — keeps exploration, worldgen, and multiplayer performance smooth under load.
⚡ Quick install
- Download the latest PolyCraft release.
- 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:
- REI (Roughly Enough Items) — browse all items and recipes with ease
- Polydex — server-side recipe viewer integration
- Polydex2REI — connects Polydex recipes directly into REI
- Inventory Sorter — quick inventory and chest sorting hotkeys
- Packet Fixer — fixes packet size issues with modded server content
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
How to Set Up a Poly-Craft Server
Order Server
Choose at least 6 GB RAM (8 GB recommended for Poly-Craft). Based on player count: per 5 players.
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.
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.
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Start your own server with automatic modpack installation.
Supported Versions
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