Updated 6 October 2026 · the United Kingdom · English
Your session cookie
dm_session is an essential first-party cookie containing an opaque session identifier. It contains neither your password nor your balance. It is HttpOnly, uses SameSite=Lax and is Secure when delivered over HTTPS.
Its maximum lifetime is two hours for guests and twelve hours for registered sessions. Logging out or ending a guest visit removes access. Blocking this cookie prevents authenticated play.
Your storage notice
dm_preferences remembers your acknowledgement of the essential-only storage policy and its version for ninety days. It does not activate optional tracking. You can update or clear that acknowledgement in Cookie Preferences.
Recovering the same round
A fe:round session-storage record remembers an interrupted round identifier for the current account and game. Its choice suffix may remember an unfinished bonus selection. The server remains the authority for results and balances.
Reminder dismissals are stored for the current tab. The fe:effects preference remembers reduced effects in this browser until it is removed. Authenticated sound and speed preferences can also be saved with your account.
Optional tracking is off
Analytics, advertising and cross-site personalisation are disabled. There is no optional tracking category you must accept to browse or play. Any future change must be reflected in the notice and preference controls before tracking is enabled.
Clearing website data
Use your browser’s website data settings to inspect and remove storage. Removing a session cookie signs you out without deleting the account’s recorded balance. A temporary guest balance may become inaccessible if its session identifier is removed.
Cookie Preferences is linked from the Cloud Dock on every page. If a storage control behaves unexpectedly, describe your browser and the action to Support.