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StateObserverMinecraft mod for 1.21.1

A library for observing state changes.

newest supported 1.21.1Utility QolLibrary Api
Latest version
stateobserver-neoforge-1.21.1-1.6.4.jar
Minecraft
1.18.2 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Fabric, Forge, Quilt
Licence
not stated
Downloads
3.0M
Updated
9 mo ago
Available on
CurseForge

Minecraft versions

Every version StateObserver declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Fabric, Forge, Quilt21+declared8 Aug 2024
1.20.1NeoForge, Fabric, Forge, Quilt17+declared12 Jun 2023
1.19.2NeoForge, Fabric, Forge, Quilt17+declared5 Aug 2022
1.18.2NeoForge, Fabric, Forge, Quilt17+declared28 Feb 2022

Download

From StateObserver’s own host. Nothing is re-hosted here.

All 36 releases
stateobserver-neoforge-1.21.1-1.6.4.jarrelease20 Dec 2025

stateobserver-neoforge-1.21.1-1.6.4.jar · 0.0 MB · for 1.21.1

Download latest
97223bb9d809…
Older versions24
  • stateobserver-fabric-1.21.1-1.6.4.jar20 Dec 20251.21.10.0 MB8 downloadsd3a94c214666…Get
  • stateobserver-neoforge-1.21.1-1.6.3.jar22 Jun 20251.21.10.0 MB182 downloadsb783697be3cb…Get
  • stateobserver-fabric-1.21.1-1.6.3.jar22 Jun 20251.21.10.0 MBd7f2af23b0cf…Get
  • stateobserver-neoforge-1.21.1-1.6.2.jar22 Jun 20251.21.10.0 MB563e577ef673…Get
  • stateobserver-fabric-1.21.1-1.6.2.jar22 Jun 20251.21.10.0 MB730d64a4cbe1…Get
  • stateobserver-neoforge-1.21.1-1.6.1.jar12 May 20251.21.10.0 MB206 downloadsc5a1633c1ed4…Get
  • stateobserver-fabric-1.21.1-1.6.1.jar12 May 20251.21.10.0 MB145 downloads362a590a4562…Get
  • stateobserver-neoforge-1.21.1-1.6.0.jar12 May 20251.21.10.0 MB21 downloads99b8fd242b52…Get
  • stateobserver-fabric-1.21.1-1.6.0.jar12 May 20251.21.10.0 MB8 downloadsa5cf333a50b3…Get
  • stateobserver-fabric-1.20.1-1.4.3.jar11 Dec 20241.20.10.0 MB8.9k downloadsf243afd1975c…Get
  • stateobserver-forge-1.20.1-1.4.3.jar11 Dec 20241.20.10.0 MB133.3k downloadsd5f3d3a970bb…Get
  • stateobserver-neoforge-1.21.1-1.5.4.jar11 Dec 20241.21.10.0 MB42.5k downloads738e213f13e7…Get
  • stateobserver-fabric-1.21.1-1.5.4.jar11 Dec 20241.21.10.0 MB8.8k downloads4aecf1c4b2d0…Get
  • stateobserver-fabric-1.21.1-1.5.3.jar9 Nov 20241.21.10.0 MB1.1k downloads53f46cf13948…Get
  • stateobserver-neoforge-1.21.1-1.5.3.jar9 Nov 20241.21.10.0 MB809 downloads3e5f49a4ee87…Get
  • stateobserver-fabric-1.21.1-1.5.2.jar7 Nov 20241.21.10.0 MB55 downloads53016c8252cb…Get
  • stateobserver-neoforge-1.21.1-1.5.2.jar7 Nov 20241.21.10.0 MB73 downloads95ee19a207ed…Get
  • stateobserver-fabric-1.21.1-1.5.1.jar7 Nov 20241.21.10.0 MB15 downloads5008ed445dca…Get
  • stateobserver-neoforge-1.21.1-1.5.1.jar7 Nov 20241.21.10.0 MB11 downloads346b9fb17dd4…Get
  • stateobserver-fabric-1.21.1-1.5.0.jar4 Nov 20241.21.10.0 MB13 downloadsdaf6ea12a36a…Get
  • stateobserver-neoforge-1.21.1-1.5.0.jar4 Nov 20241.21.10.0 MB16 downloadscaef3f93f659…Get
  • stateobserver-fabric-1.20.1-1.4.2.jar1 Jun 20241.20.10.0 MB8.5k downloads0ed488dc6824…Get
  • stateobserver-forge-1.20.1-1.4.2.jar1 Jun 20241.20.10.0 MB134.2k downloadsed6a1ba29788…Get
  • StateObserver-fabric-1.20.1-1.4.0.jar18 Apr 20241.20.10.0 MB260 downloads89aa2c542907…Get

Frequently asked

Does StateObserver work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version StateObserver declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does StateObserver support?

Everything the author has declared, from 1.18.2 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does StateObserver support?

NeoForge, Fabric, Forge, Quilt. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for StateObserver?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

How do I install StateObserver?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download StateObserver safely?

Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Last checked 1 mo ago against CurseForge. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .