Updated24 October2026
Necessary choices and sessions
wt_portal supports sign-in for up to 30 days after activity. wt_lang remembers an expressly selected language for up to 365 days. wt_measurement remembers your measurement choice for up to 180 days. The legacy registration form may use wt_registration_csrf for up to one hour. These purposes are separate from optional analytics.
Optional measurement cookies
If you accept measurement, wt_visitor can last up to 180 days, wt_visit up to 30 minutes and wt_source up to 30 minutes. They support public-page measurement and bounded registration-source information. Refusing measurement does not prevent sign-in or gameplay. You can change your choice using Cookie settings. Refusal clears those optional cookies for future requests; it is not an assertion that historic database records were erased.
Independent, non-commercial fan/community project. No official endorsement. These policies do not create a licence for third-party materials.