Privacy

Ball Knowledge. Last updated November 6, 2026.

You can play without an account. Signing in with Google is optional, and it saves your streak and scores and lets you join the leaderboard.

If you sign in with Google

We keep:

• the ID number Google gives us for your account, so we can recognise you next time
• the nickname you choose, which appears publicly on the leaderboard
• your score for each daily game, which appears publicly next to your nickname

Google also tells us your name, email address and profile picture when you sign in. We don't store them.

When you play, signed in or not

• Answers: your correct answers are saved with a random ID stored in your browser, to work out how rare each answer is. This isn't linked to your Google account.
• Your browser: your progress and sign-in are saved in your browser's local storage. Pages with ads may also use cookies; see "Ads" below.
• Your internet address: it's used briefly to limit how many requests can be sent. We don't store it ourselves, though our hosting provider may keep standard logs.

If you play with friends

Multiplayer rooms need no account. A room temporarily keeps the name you type, which everyone in the room can see, a random ID stored in your browser so you can reconnect, and that game's answers and wins. A room and its data are deleted within about an hour of the last activity. While it's your turn, everyone in the room sees what you type as you type it, including wrong guesses. Those guesses aren't saved. A public room is listed for anyone to join, and the list shows the host's name.

If you join the email list

The email list is optional, and you only join by ticking the box. We keep:

• your email address, to send you the daily challenge, game news and offers from sponsors
• when you agreed, what wording you agreed to, and where on the site you signed up

We ask for your birth month and year to apply age rules. We don't keep them. The list isn't connected to your Google account or scores.

We don't sell your email or give it to sponsors. Sponsors pay us to include their offers in emails we send. A company that sends emails for us may handle your address for that purpose only.

We keep your address until you ask us to delete it. If you unsubscribe, we keep your address only to make sure you stay unsubscribed.

Ads

Pages that show ads use Google AdSense. Google and its partners may use cookies and similar technology to show ads and measure them, including ads based on your visits to this and other sites. You can turn off personalized ads in Google's ad settings, and read how Google uses this information. Where the law requires it, we ask for your consent first.

Who handles the data

The site and its data are hosted by Cloudflare, and sign-in is provided by Google. The site's fonts are also loaded from Google. We don't sell your data.

Deleting your data

On the home screen, sign in and choose Delete account. That immediately removes your nickname and scores. Rarity answers can't be traced back to you, so they stay.

To unsubscribe, use the link in any email. To remove your address from the email list completely, enter it here:

Children

This game isn't directed at children under 13, and you need a Google account to sign in. We don't add anyone under 13 to the email list. If you think a child under 13 has given us their information, email us and we'll delete it.

Contact

Questions? Email [email protected].

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