SlimLine

SlimLine

A lightweight modpack for Legacy Fabric 1.8.9 that aims to simplify, optimize, and refine the vanilla experience

by FutureLizard205
668 Downloads
0 Followers
fabricMC 1.8.9lightweightoptimization

Screenshots

Title Screen

About this Modpack

SlimLine 1.8.9

SlimLine is a lightweight modpack for Legacy Fabric 1.8.9 that aims to simplify, optimize, and refine the vanilla experience.

It is designed to be as unobtrusive and stable as possible, while offering notable performance improvements (especially for older machines), together with some quality-of-life enhancements.

Due to its nature, SlimLine should be fully interoperable with vanilla, allowing servers and clients to connect with each other seamlessly.

Made and tested with Prism Launcher. Compatibility with other launchers wasn't tested.

Feature List

Performance Optimization

Through Alternate Current, Phosphor-Legacy, Ksyxis, and SleepBackground, the performance of the game is optimized while conserving behavior and compatibility.

Mipmaplevel and Language Fix makes changing language nearly instant.

Ksyxis can be disabled if you need to use the spawn chunks functionality (e.g. for automatic mob farms that require it).

Note: Optifine could be added to the modpack (through Legacy Optifabric), but it was left out to better preserve vanilla behavior and interface.

Bug Fixes

Legacy VanillaFix, legacy-crash-fix, and MouseDelayFix-fabric are used to fix small bugs within the game, such as the hand glitching when riding minecarts, and cursor inaccuracies when moving the mouse quickly with low fps.

Improvements


Title Screen Preview

Minecraft's title screen, with no realms button and mod menu button.
As stated, no Realms button, as well as no mod menu button, to keep the interface clean ;)


Icon created with TextStudio and GIMP

Available Versions

SlimLine 1.8.9 - v1.1.1release
MC 1.8.9fabric178 downloads
February 16, 2026
SlimLine 1.8.9 - v1.1.0release
MC 1.8.9fabric354 downloads
September 5, 2025
SlimLine 1.8.9 - v1.0.0release
MC 1.8.9fabric136 downloads
June 29, 2025

How to Set Up a SlimLine Server

1

Order Server

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

2

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "SlimLine" and click "Install". The fabric loader and Minecraft 1.8.9 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

SlimLine 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 SlimLine 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 SlimLine without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.8.9). 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.

SlimLine 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.

Rent SlimLine Server

Start your own server with automatic modpack installation.

Recommended RAM:
6 GB(min. 4 GB)
From 8.00 / month
Create Server Now
1-Click Modpack Install
NVMe SSD Storage
DDoS Protection included
Automatic Backups

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Optional
Client-side
Optional

Supported Versions

1.8.9

Start your SlimLine Server now

From €8.00/month with 6 GB RAM for the best performance.

Configure Server →