Privacy
Oscar's Catan, at oscarlechner.com/catan. Last updated 10 November 2026.
You can play every mode without an account. This page covers what is kept when you play a ranked game or sign in, and how to have it removed.
Playing as a guest
When you start a game that can go on a leaderboard (castaway, or a game against bots at the default rules), the game makes an anonymous account for this browser. It has no name or email. It holds the ranked games you finish: the table, your score, and the moves you made, which the server replays to check the score is real. Guest games are visible only to you.
A guest account that never signs in and hasn't finished a game in 30 days is deleted automatically, with its games.
Signing in
You can sign in with Google, with Discord, or with a code sent to your email address.
- Google or Discord: the game receives that account's email address, name and profile picture.
- Email: the game keeps the address you typed and sends a one-time code to it. Nothing else is ever sent there.
All of this is used only to recognise you when you sign in again. Your email is never shown to anyone. The leaderboards show the display name you choose and your piece colour, and nothing else about you. An email sign-in that is never confirmed with its code is deleted after a day.
Where it is kept
Accounts and games are stored with Supabase, which runs the database and sign-in. Sign-in codes are emailed through Resend. Nothing is sold or shared with anyone else, and there is no advertising. The site's own analytics are described on the main site.
Deleting your account
Signed in, open the menu in the top corner of the game's front page and choose Delete account. Your account, your name and every game on it are removed at once. A guest can clear this site's data in the browser to forget its account. You can also email oscarlechner@gmail.com and it will be done for you.