Privacy Policy
This policy explains what Hollowdusk collects, why, and what you can do about it. The short version: we collect what the game needs to run and to save your progress, we don't sell data, and there are no ads.
What we collect
- Account: your email address, a password hash (argon2id; we never store your actual password), and whether you have opted in to news emails, with when and how that choice was made.
- Game data: your cloud-saved worlds, your hero's name and appearance, and your total play time.
- Ideas Board: ideas you submit and the votes you cast.
- Multiplayer: the worlds you host and who you invite to them.
- Visit statistics: daily counts of page views, logins and sign-ups. To count unique visitors we compute a one-way hash of your IP address and browser identifier combined with the date. The hash changes every day, and we never store the IP address itself.
Why we use it
- To run the game you asked for: your account, saves, hero and multiplayer worlds.
- To keep it working and safe: visit statistics, abuse prevention and security.
- With your consent: news and updates by email, only if you opted in.
Emails
We use your email address to sign you in and to send service emails about your account, beta access, security, or important changes.
We send news and updates (marketing) only if you opted in. The box is unticked by default when you request a key, and you can change your choice at any time from the ☰ menu in the game. We keep a record of when and how you opted in or out. Every marketing email has a one-click unsubscribe link, and you can also unsubscribe by writing to [email protected]. We never sell or rent your email address or share it with advertisers.
Cookies
We use one essential cookie, sid, to keep you signed in. It is HttpOnly and used for nothing else. The game also stores settings and an unsynced local copy of your world in your browser's local storage.
Other services
The site is delivered through Cloudflare, which processes requests (including IP addresses) to protect and speed up the service, and provides basic, cookieless web analytics. We use no advertising or tracking networks, and we don't sell or share your data with advertisers.
How long we keep it
Account and game data are kept while your account exists. Visit statistics are kept as daily totals.
Your choices
You can ask us to export or delete your account and its data, or to stop all non-essential email, at [email protected]. You can switch news emails on or off yourself at any time from the ☰ menu in the game.
Children
Hollowdusk isn't directed at children under 13, and we don't knowingly collect their personal information.
Changes
We'll update this page if our practices change and note the date at the top.
See also the Terms of Service.