CurseForge · Minecraft mod
Sphaira
Library for most of Right Hand Man's mods.
Quick answer
Which Sphaira release matches 1.21?
Sphaira 1.0.0 for Neoforge 1.21 targets 1.21, 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Sphaira required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Sphaira 1.0.0 for Neoforge 1.21 need?
1.0.0 for Neoforge 1.21 on 1.21. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Sphaira without breaking your instance.
Built for Sphaira 1.0.0 for Neoforge 1.21 on 1.21. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.0 for Neoforge 1.21. It targets 1.21, 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0.0 for Neoforge 1.21. It opens that exact file at the source.
About this project
What does Sphaira add?
Sphaira
Sphaira is a library with common code for most of my mods.
This means that instead of having the same piece of code in most mods, I can just add it to Sphaira and easily use it in all of my mods.
It also means that if I find a bug I can simply update this single project instead of having to update multiple.
Usage
If you are also a developer, you are absolutely free to use this library. I try to keep it semver compatible. I will, however, likely never provide documentation.
Project description from CurseForge.
Pick your setup
Sphaira by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.9
4 loader builds1.21.8
4 loader builds1.21.7
4 loader builds1.21.6
4 loader builds1.21.5
4 loader builds1.21.4
4 loader builds1.21.3
4 loader builds1.21.2
4 loader builds1.21.1
4 loader builds1.21
4 loader builds1.20.6
4 loader buildsShowing the newest 12 of 28 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Sphaira versions and loaders
1.0.0 for Neoforge 1.21
sphaira-neoforge-1.0.0+1.21.jar
2 Nov 2025
1.0.0 for Forge 1.21
sphaira-forge-1.0.0+1.21.jar
2 Nov 2025
1.0.0 for Fabric 1.21
sphaira-fabric-1.0.0+1.21.jar
2 Nov 2025
Looking for an older file? The official CurseForge project page is in Resources.