UnstableCraft

UnstableCraft

A chaotic modpack with every mod imaginable.

by cici_dreemur
376 Downloads
0 Followers
forgeneoforgeMC 1.21.1kitchen-sinkmultiplayer

About this Modpack

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About

A chaotic modpack with every mod imaginable, inspired by CrazyCraft or InsaneCraft. This is a personal modpack for some friends of mine on a server, but I might as well make some ad revenue money off of it. We wanted the server to be a loser's version of the Unstable SMP, but that didn't work out, but in remembrance of the original idea, it is called UnstableCraft. Contrary to the name, I hope to make the modpack as stable as I can.

Performance & Stability

I want to make this modpack as stable and performant as possible, but with the large amount of mods I plan to add, I cannot guarantee that it will work well on lower-end pcs. If your pc cannot run this pack I suggsest trying UnstableCraft Lite, a version of the modpack only with performance, minimal utilities, and every server-side mod.

Content

As of now, this modpack has mostly utility related mods. I plan to update the pack with content related mods in the future. Mods like Cataclysm, Apotheosis, Twilight Forest, BetterX Mods, and Modern Industrialization, are planned.

Multiplayer

This modpack was made for a private server, but if the pack gets popular I might make a public server for it. But for now, using Essential to host your own worlds or making your own server is reccomended. If a public server ever happens, it will be after the modpack gets most of it's content mods. UnstableCraft Lite will also be compatible like I said before.

Available Versions

UnstableCraft 2.1.8alpha
MC 1.20.1forge141 downloads
January 28, 2026
UnstableCraft 2.1.7alpha
MC 1.20.1forge11 downloads
January 28, 2026
UnstableCraft 2.1.6alpha
MC 1.20.1forge11 downloads
January 27, 2026
UnstableCraft 2.1.5alpha
MC 1.20.1forge16 downloads
January 27, 2026
UnstableCraft 2.1.4alpha
MC 1.20.1forge31 downloads
January 8, 2026

How to Set Up a UnstableCraft Server

1

Order Server

Choose at least 4 GB RAM (6 GB recommended for UnstableCraft). Based on player count: per 5 players.

2

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "UnstableCraft" and click "Install". The forge loader and Minecraft 1.21.1 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

UnstableCraft server crashes or won't start – what to do?

Most common causes: insufficient RAM or wrong forge 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 UnstableCraft server really need?

Minimum 4 GB, recommended 6 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 €8/month).

Can I add custom mods to UnstableCraft without conflicts?

Yes, but check compatibility: only use mods for the same loader (forge) and same Minecraft version (1.21.1). 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.

UnstableCraft 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 UnstableCraft 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-CoFH-Dont-Be-a-Jerk-License-v2
Server-side
Required
Client-side
Required

Supported Versions

1.21.11.20.1

Start your UnstableCraft Server now

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

Configure Server →