AstralRinth — a powerful fork of Modrinth, reimagined to enhance your Minecraft journey. Whether you're a GUI enthusiast or a developer building with Modrinth’s API, Theseus Core is your launchpad into a new era of Minecraft gameplay.

About the Software

AstralRinth is a dedicated branch of the Modrinth (a.k.a Theseus) project, focused on offline authentication, offering you more flexibility and control. Play Minecraft without the need for constant online verification — a user-first approach to modern modded gaming.

Install Instructions

To install the launcher:

Visit the releases page to download the correct version for your system.
Run the downloaded file or extract and launch it, depending on the format.

Downloadable File Extensions

Extension	OS	Notes
`.msi`	Windows	Supported on all recent Windows versions (10/11)
`.dmg`	macOS	Works on Ventura, Sonoma, Sequoia, Tahoe (may also support older versions)
`.deb`	Linux	Basic support; compatibility may vary by distribution

Installation Warnings

Avoid using builds with these prefixes — they may be unstable or experimental:

dev
nightly
dirty
dirty-dev
dirty-nightly
dirty_dev
dirty_nightly

Features

The launcher provides an opportunity to use the well-known Modrinth, but with an improved user experience.

Included exclusive features

No ads in the entire launcher.
Custom .svg vector icons for a distinct UI.
Improved compatibility with both licensed and pirate accounts.
- Use official microsoft accounts or offline/pirate accounts.
- Supports license-free access for testing or personal use.
- No dependence on official authentication services.
Discord Rich Presence integration:
- Dynamic status messages.
- In-game timer and AFK counter.
Strict disabling of statistics and other Modrinth metrics.
Optimized archive/package size.
Integrated update fetcher for seamless version management.
- Built-in update alerts for new versions posted on Git Astralium.
- Automatic download and installation capabilities.
Database migration fixes, when error occurred (Interactive Mode) (Modrinth issue)
Ely.by full integration
- The official account skin system is managed by ely.by
- Offline accounts must install AuthLib through the instance settings

Getting Started

To begin using AstralRinth:

Download Latest Release
- Go to the releases page
- How to choose a file
- How to choose a release
Log in or create new offline account
- Use your official Microsoft account (MSA), or test using a non-licensed account (Offline).
Launch Minecraft
- Start Minecraft from the launcher.
- The launcher will auto-detect the recommended JVM version.
- You can also configure Java manually in the settings.

Disclaimer

AstralRinth is intended solely for educational and experimental use.
We do not condone piracy — users are encouraged to purchase a legitimate Minecraft license.
Respect all relevant licensing agreements and support Minecraft developers.

Support Our Project (Crypto Wallets)

If you'd like to support development, you can donate via the following crypto wallets:

Toncoin (TON): UQA5pGOJhIz9UAVEOh5t2ur1QVbNr_FC1eq9bOb3GwTgaiqk
USDT (TON): UQA5pGOJhIz9UAVEOh5t2ur1QVbNr_FC1eq9bOb3GwTgaiqk

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AstralRinth • Empowering Your Minecraft Experience