Found this fork that is the same like this but better, this project is abandoned now.

💎 QuartzLauncher

A PrismLauncher fork for offline Minecraft gaming.

✨ Features

• 🎮 Offline Play - Play without authentication checks
• 🔄 Auto-Updates - Automatically synced with PrismLauncher
• 🔧 Smart Patching - Custom patches applied seamlessly
• ⚡ Zero Maintenance - Set it and forget it

🚀 Quick Start

1. Clone or fork this repository
2. Patches are automatically applied on each sync
3. Download the latest release

📁 What's Inside

• patches/ - Custom patches for offline functionality
• icons/ - Custom branding assets
• build.yml - GitHub Actions workflow for auto-patching

📝 License

See LICENSE for details.

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Made with ❤️ for offline Minecraft lovers