Your DOS player records and game settings are saved in this browser. Signing in does not move these saves to another device.
We use X to identify you. We store your X user ID, handle and display name, plus a first-party login session. We do not store your X access token, request posting access, or read your posts. X requires read scopes for its identity endpoint.
If you publish a player, your X handle, completed-level count and recorded play time become public in the Hall of Fame. Other players on your computer are not published. You can remove your leaderboard entry in that panel. Signing out ends this browser's login session.
The public site uses Google Analytics to measure visits and game features. We do not send X IDs, handles, DOS player names or sign-in codes to Google Analytics. Advertising signals and personalization are disabled. You can turn analytics off in the Hall of Fame panel; your choice is saved in this browser.
Cloudflare hosts the site and leaderboard database. Session cookies last up to 30 days. X sign-in attempts expire after ten minutes. Google Analytics may set its own measurement cookies. Clearing browser data removes your local game saves and preferences.