Don't lose your worlds. Local restore points before you launch.
Unofficial product. Not approved by or associated with Mojang or Microsoft.

Continuity is the product. Create a restore point, then play. Updates and device moves stop being a coin flip with your saves.

Point Tetherkeep at a Minecraft: Java instance you already use.
Name a safe checkpoint before you update mods or risk a bad session.
Worlds land in content-addressed local storage. Offline by default.
Recovery writes to a new directory. Your live world stays untouched.
World safety is non-negotiable. Continuity MVP is local-first; hosted cloud sync comes later and stays optional.
Local import, backup, and restore today. Open source. Offline by default. Grab the latest release from GitHub when assets are published.