BlockOS

Name: BlockOS
Price: 8 EUR
Author: ByLype

This modpack is a set of mods that do not depend on a host having them, in case you can use them on friends' servers (or any server you allow). Mods such as: Mini-Map Bedrock-style bridge construction Chest Tracker More animations Performance mods

by ByLype

109 Downloads

0 Followers

fabricMC 1.21.11multiplayeroptimization

Rent BlockOS Server

About this Modpack

⚡ Your Game. Anywhere.

A lightweight client-side modpack built to enhance your Minecraft experience on any server — no installation required.

Smooth performance, useful features, and a clean vanilla feel.

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🧭 Xaero’s Map

Minimap and full world map for easy navigation and exploration. Never get lost again.

Xaero's Minimap
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🧠 Jade

Displays useful information about blocks and entities directly on your screen.

Jade 0

Jade 1

Jade 2
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📦 Chest Tracker

Keep track of opened chests and stored items across your world.

Chest Tracker 0

Chest Tracker 1
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🌫️ Fog Control

Customize or remove fog for better visibility and a cleaner view of the world.

Simple Fog Control
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🏗️ Bridging Mod

Helps with precise block placement, making bridging smoother and easier.

Bridging
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🎒 Inventory HUD+

Displays your inventory on screen for faster access and better awareness.

Inventory HUD +
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🧩 Inventory Profiles Next

Advanced inventory sorting, auto-refill, and smart management tools.

Inventory Profiles Next
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⚡ Performance Boost

A collection of optimization mods that drastically improve FPS and reduce lag.

Faster rendering
Better memory usage
Smoother gameplay

+FPS
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Available Versions

BlockOS 1.0.1release

MC 1.21.11fabric100 downloads

March 31, 2026

BlockOS 1.0.0release

MC 1.21.11fabric9 downloads

March 31, 2026

How to Set Up a BlockOS Server

Order Server

Choose at least 4 GB RAM (6 GB recommended for BlockOS). Based on player count: per 8 players.

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "BlockOS" 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

BlockOS 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 6 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 BlockOS server really need?

Minimum 4 GB, recommended 6 GB for stable performance. per 8 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 €8/month).

Can I add custom mods to BlockOS 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.

BlockOS server lagging – performance tips

1) Increase RAM to 6 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.