Install & first launch

Get the launcher at stygion.eu — the page offers the right build for Windows or Linux. Download, install, run. It is free.

The installer and the AppImage from stygion.eu handle updates themselves — they check for a new version on every start and offer it. A copy from another source (a store, a package manager) is updated by that source, not by the launcher; Settings → Updates tells you which one does it for you. See Settings & updates.

The Windows installer from stygion.eu is not signed yet, so Windows shows the blue SmartScreen window. Choose "More info" and then "Run anyway".

A short three-step walkthrough sets you up on first run:

1. Welcome — what the launcher is and that it runs on your side.
2. Data folder — where instances, downloaded Java and game files live. Default is the system data folder, but you can choose your own (e.g. another drive). Move it later and the launcher copies, verifies and switches safely — you lose nothing.
3. Setup — the launcher prepares what it needs and you're done.

You change the look (System / Light / Dark) anytime in settings. You add an account in the accounts dialog in the top bar: sign in with Microsoft to play online, or continue offline. See Accounts. None of this needs a STYGION ID.

The Home screen is neutral, not a wall of promotion:

• Continue — the instance you played last (Play / Open).
• The server where your last session ended — back there in one click.
• Recently played and news below.
• Launching opens the launch window (progress, tips, a live MC console). After you close it a bubble stays at the bottom — reopen the window or stop the game. When the game stops the bubble closes by itself.
• Join on a server is a Quick Play join, not the pack detail.

The bar at the top: search (commands, Ctrl+F), Feedback, the bell, your account, window controls. On the right, the Friends panel (STYGION ID). Packs, servers, friends and instances each have their own detail page.

The Play button on stygion.eu (and on the sites of servers that made one) opens the launcher, asks once and installs the modpack in the version the server runs right now. In detail in A Play button for your server.

• Accounts — signing in and switching accounts.
• Instances — how they work and how to manage them.
• Modpacks & mods — installing content.