Your record
Your own best runs, game by game and section by section — including the ones you have not opened yet. This is kept in this browser and is not sent anywhere.
Where this lives. Everything above is read from this browser’s own storage on this device. It is not an account, there is no server behind it, and nothing here is transmitted. (The site does count anonymous usage — which games get opened and whether questions are answered right — but never what is stored here, and never who you are.) So it will not follow you to another computer, and clearing your browser data clears it. If several people share this device and browser profile, they share this record too.