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CurseForge · Minecraft mod
Sphaira
Library for most of Right Hand Man's mods.
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Sphaira release matches 1.21 Forge?
Best match for your filters 1.0.0 for Forge 1.21
Game version 1.21, 1.21.1
Loader Forge
Sphaira 1.0.0 for Forge 1.21 targets 1.21, 1.21.1 with Forge. 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.
Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Forge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
The source does not explicitly classify this release as client-only or server-only.
What else does Sphaira 1.0.0 for Forge 1.21 need?
1.0.0 for Forge 1.21 on 1.21 Forge. 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 Forge 1.21 on 1.21 Forge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.0 for Forge 1.21. It targets 1.21, 1.21.1 with Forge; 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 Forge 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.
Minecraft version
1.21.9
4 loader buildsMinecraft version
1.21.8
4 loader buildsMinecraft version
1.21.7
4 loader buildsMinecraft version
1.21.6
4 loader buildsMinecraft version
1.21.5
4 loader buildsMinecraft version
1.21.4
4 loader buildsMinecraft version
1.21.3
4 loader buildsMinecraft version
1.21.2
4 loader buildsMinecraft version
1.21.1
4 loader buildsMinecraft version
1.21
4 loader buildsMinecraft version
1.20.6
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 Forge 1.21
sphaira-forge-1.0.0+1.21.jar
2 Nov 2025
Client Source doesn’t say Server Source doesn’t say Dependencies No extras listed Listed on Release listing
Check the 1.21 · Forge setup 1.21Forge1.21.1 release
Looking for an older file? The official CurseForge project page is in Resources.
