Privacy & credits · Door Zero

The short version

No ads, no analytics, no third-party trackers, here or in the games. Each game stores only what it needs to run, and deletes the rest on a schedule.

Last updated October 2026.

No accounts, no forms, no cookies.
If you turn the keyboard-shortcut setting off, your browser remembers that choice on your own device. Nothing is sent anywhere.
Fonts load from Google Fonts. The site is hosted on Cloudflare, which handles your requests the way any web host does.

The request form asks for a name, an email address, and, if you like, who you know in the game.
The email is used only to send your invite code.
Your email and the "who you know" answer are deleted 30 days after your request is answered.

An account is a handle and a password. The password is stored only as a salted scrypt hash, never as the password itself.
Accounts hold no real name and no email address.
The sign-in cookie works only on the game's own address. It isn't shared with this site or anything else.

Your progress is saved on the game's server, along with up to 20 earlier copies, so a lost save can be restored.
Board posts, reports and moderation records are kept to run the game. Reviewed word-filter flags are deleted after 90 days; resolved reports and closed messages after 180 days.
Messages you send to the operators include the game version and your browser, to help with bug reports.
Some characters on the in-game DarkNet board are AI. When you talk to them, your message is sent from the game's server to Anthropic's API to write their reply.

Email codes@door-zero.com to ask what's stored about you, or to have it removed.

Zero Door Protocol's word filter uses the List of Dirty, Naughty, Obscene, and Otherwise Bad Words, used unmodified under CC BY 4.0, plus a few local additions and exceptions.
Type: IBM Plex Mono and VT323, both under the SIL Open Font License.
Games, site and artwork by Jon.