Privacy

History Hero is a client-side puzzle game. Your progress saves in your browser's localStorage. No account, no server-side storage. Telemetry (page views, level completions, crashes) goes to Lotl Observe.

There is no backend. Levels and your progress are entirely client-side. Telemetry goes to Lotl Observe so we can see what works and what breaks.

What we collect

We collect the following kinds of data:

Local progress: Which levels you've completed and which hints you've revealed are saved to your browser's localStorage. Nothing is sent to the server; clearing your browser data resets your progress.Stored in your browser. Kept until you delete it. Legal basis: legitimate interests. Removable when you delete your account.
Usage telemetry: Page views, level start and completion events, hint-reveal counts, and crash reports sent to Lotl Observe. Does not include any identifying information about you.Stored on our server. Kept permanently. Legal basis: legitimate interests. Not individually deletable. Shared with: Lotl Observe.
Feedback messages: Messages you send via the in-app feedback button are recorded by Lotl Observe so the maintainer can read them.Stored on our server. Kept until you delete it. Legal basis: legitimate interests. Not individually deletable. Shared with: Lotl Observe.

Third parties

These external services receive some of your data:

DigitalOcean — static-site hosting for History Hero

Your rights

You can export everything we hold about you, and delete your account at any time. Both options live in your account settings. Deletion is immediate and unrecoverable.

Last updated: 2026-07-30.