Your game stays in this browser.
The site stores the current board, move history, selected mode, computer level and hint preference using local storage when your browser allows it. Storage keys begin with othello-play:v1: and are separate for the homepage, computer page and two-player page. This data is used to restore play on the same browser.
The site does not upload saved positions to a player profile or a cloud-save service. Computer moves are calculated on your device. There is no hosted model API, account registration, advertising tag or visitor analytics script in this release. Fonts and game assets are served from this site.
You control the saved position.
New game replaces the saved board for the current game page with a fresh starting position. To remove all saved game data and preferences, use the button here or clear this site's storage through your browser settings. A different browser or device has its own separate storage.
If local storage is blocked or full, the game remains playable in the current page and displays a message that it cannot save. Private browsing or automatic storage deletion can also remove a saved position.
Normal hosting requests still happen.
The site is hosted on Cloudflare Pages. Loading a page sends normal network information, such as your IP address, requested URL and browser information, to the hosting infrastructure. Cloudflare may process that information to deliver the site, protect it and operate its services.
See Cloudflare's privacy policy for the provider's practices. This notice describes the application code; it does not promise that infrastructure providers keep no network logs.
Links to other websites.
Rule citations and project links may lead to the World Othello Federation, Wikipedia, the British Go Association, GitHub or other services explicitly named in a link. Opening one of those pages connects your browser to that service, which applies its own policies. No third-party game iframe is embedded on this site.
The current release.
This notice describes the site published on November 14, 2026. Features that introduce accounts, analytics, advertisements or remote multiplayer would need a corresponding update to this notice. Read about this independent project for its current scope.