selimaj-devandclaude 95e4dff448
Check / compile (pull_request) Successful in 7m13s
Build 1.21.10 with Stonecutter from the shared src/
Step 2 of #8. versions/1.21.10/src is gone; 1.21.10 builds from src/ as
:1.21.10, with versions/1.21.10 keeping only gradle.properties and run/.

API differences go behind version comments: render layers (ShaderUtils),
Camera.update's World vs BlockView (CameraMixin), the text and textured-quad
render states (RenderScopeImpl), Screen.init (SplashOverlayMixin) and
jspecify's @NonNull (SaturnRenderState).

Features 1.21.11 leaves out stay on 1.21.10, with a TODO for 1.21.11:
WorldFeatureImpl.getWorldAge, SaturnScreenFabric.resize and
EntityDrawerImpl clearing the hitbox.

Hats now render on 1.21.10: its HatFeatureRenderer overrode the
render-queue method with an empty body, and the working code sat in an old
VertexConsumerProvider method nothing called. 1.21.10 now uses 1.21.11's
render-queue implementation (HatFeatureRenderer, ObjModel, ObjRenderer),
and also gets 1.21.11's null check on the player's display name.

The 1.21.10 jar has the same entries, fabric.mod.json and mixin configs as
before; only those four classes and ShaderUtils (a helper method for
entityAlpha) have different bytecode. The 1.21.11 jar only differs in
ShaderUtils.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-09-27 05:05:03 +02:00
2026-09-25 00:13:58 +02:00
2025-04-05 19:20:59 +02:00
2026-03-05 15:24:28 +01:00

Saturn Client Logo

Saturn Client

A free and open-source Minecraft client.
Built with performance, customization, and community in mind.

Saturn Client Screenshot

About

Saturn Client is a free, open-source Minecraft client designed to enhance the gameplay experience while staying lightweight and customizable. Our goal is to build a clean, optimized client that the community can contribute to and improve together.

Saturn runs on Fabric and supports Minecraft 1.21.4 to 1.21.11, with one build per version. If something doesn't work on your version, please open an issue.

Features

  • Free cosmetics that don't require real money: cloaks, including animated ones, and hats
  • 18 built-in mods: Armor Display, Auto Sprint, Clock, Coordinates, Crosshair, Day Counter, FPS Display, Freelook, Fullbright, Health Display, Keystrokes, Nametags, No Fog, Ping Display, Speedometer, Status Effects, TPS Display and Zoom
  • Clean and modern UI with animations
  • Ongoing performance improvements
  • Open-source and community-driven

Installation

  1. Install Fabric Loader and Fabric API for your Minecraft version.
  2. Download the Saturn Client jar for the same version from Modrinth or the releases page.
  3. Put it in your mods folder.

Network use

For cosmetics, Saturn Client connects to the Saturn server (saturn-server.selimaj.dev). You're signed in the same way as on an online-mode Minecraft server: your client proves who you are to Mojang's session server, and the Saturn server asks Mojang to confirm it. Your Minecraft access token is only ever sent to Mojang, never to the Saturn server.

Building from source

The version-independent code lives in the common submodule, so clone with submodules:

git clone --recurse-submodules https://git.selimaj.dev/saturnclientmc/saturnclient.git
cd saturnclient

./gradlew buildAll                    # every version → build/allJars/
./gradlew :1.21.11:build              # a single version (versions not on Stonecutter yet: :mc-1.21.9)
./gradlew :1.21.11:runClient          # launch a development client

Building needs Java 21.

Contributing

We welcome contributions of all kinds:

  • Code improvements
  • Bug fixes
  • UI enhancements
  • Cosmetic designs
  • Suggestions and feedback

If you're an artist or designer interested in helping with cosmetics or visual assets, we'd love to collaborate.

Most features belong in common, which every Minecraft version shares. For code that differs between versions, see the version guide: it covers how the versions are laid out, porting a change to all of them with scripts/port.sh, and adding a new Minecraft version. Every pull request is compiled for all versions automatically.

Credits

If any code or assets belong to you and you would like them removed, please open an issue. We aim to properly credit all contributors and respect original creators of their respective art.

License

Saturn Client is free and open-source under the Apache-2.0 license.

Made with ❤️ by the Saturn Client team

S
Description
Saturn Client is a minecraft client full of customizability and free cosmetics
Readme Apache-2.0
257 MiB
2026-09-30 20:37:55 +00:00
Languages
Java 96%
JavaScript 2.8%
GLSL 1.2%