LineBlock

LineBlock is a Minecraft Fabric 1.20.4 mod that allows you to write and execute custom block-based scripts directly inside the game world.

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About this Mod

LineBlock is a Minecraft Fabric 1.20.4 mod that allows you to write and execute custom block-based scripts directly inside the game world.

With LineBlock, you can:

Build logic using in-world blocks, similar to programming.
Execute mathematical expressions and control structures like loops and conditions.
Assign and modify variables.
Use blocks to represent values of different types (INT, FLOAT, BOOL, STRING).

This mod is perfect for experimenting with programming logic directly in Minecraft — without typing a single line of code.

code

Available Versions

LineBlock 1.0.0release

MC 1.20.4, 1.20.5, 1.20.6fabric

October 28, 2025

How to Install LineBlock on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.6).

Install Mod

Open the mod browser in the dashboard and search for "LineBlock". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.20.6, 1.20.5, 1.20.4

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

LineBlock server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.6). You can switch loaders with one click in the panel.

Is LineBlock compatible with fabric?

LineBlock officially supports fabric for Minecraft 1.20.6, 1.20.5, 1.20.4. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with LineBlock – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if LineBlock consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.