Blockstates are game aspects that define how the game works. Most of the items in the game have a blockstate that the game checks to determine how the game world. This means, everything around you is constantly being checked for blockstate changes. And obviously, this affects the game performance. Favouriteless State Observer Mod is here to help you with that. This is a very small and lightweight library for observing blockstate changes across a large area without a large performance hit.
Features:
- Performance mod
- Observe blockstate changes across large areas without affecting performance much.
Screenshots:
Favouriteless State Observer Mod Download Links
For Minecraft 1.21.1, 1.21
NeoForge version: Download from Server 1 – Download from Server 2
Fabric/Quilt version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.1, 1.20
Forge/NeoForge version: Download from Server 1 – Download from Server 2
Fabric/Quilt version: Download from Server 1 – Download from Server 2
For Minecraft 1.19.2
Forge version: Download from Server 1 – Download from Server 2
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.18.2
Forge version: Download from Server 1 – Download from Server 2
Fabric version: Download from Server 1 – Download from Server 2
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as 197548.mcaddon
- Download size: 12 KB
- Download link checked 26 Jul 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.