Each game has its own privacy policy, because each one handles data a little differently. They share a few things: you can play without an account, nothing about you reaches us unless you choose to sign in, and you can delete your account and its data at any time.
otfdp.com uses no cookies, no analytics and no tracking scripts. It is hosted by Netlify, which keeps standard server logs - such as IP addresses and the pages requested - to run and protect the service.
Questions about privacy: privacy@otfdp.com.