Privacy policy

Last updated: July 2026

This policy explains how 20-0 ("we," "the site") handles information when you play the game or read a guide.

No account, no sign-up

The game never asks you to create an account or provide personal information to play. Your draft progress, completed runs, and personal-best record are saved only in your own browser's local storage — we never see or store that data on our servers.

The Daily Challenge leaderboard

If you choose to submit a result to the public Daily Challenge leaderboard, we store the display name you type, your final regular-season record, your grade, and the time of submission in Cloudflare Workers KV. We also generate a random, anonymous player ID (stored in your browser's local storage, not tied to any real identity) so you can update your own entry instead of creating duplicates — this ID is never displayed publicly and is stripped from the data returned to other players.

Leaderboard entries are automatically deleted after 3 days. Do not submit a real name or any personal information as your display name — anything you type there is shown publicly.

Technical logs

Like most websites, our hosting provider (Cloudflare) automatically logs standard technical data — IP address, browser type, and pages visited — for security and performance purposes. We do not run third-party advertising trackers.

Cookies

We do not set advertising or tracking cookies. The site uses your browser's local storage (not cookies) to save game progress and your anonymous player ID, as described above.

Third-party links

Our guides link to external sources, including neutral historical references and, where relevant, other games in the same genre. We are not responsible for the privacy practices of those sites.

Changes to this policy

If this policy changes, the "last updated" date at the top of this page will change.

Contact

Questions about this policy? See our contact page.