How Often Does 8Win Update Its Promotions? A Practical, Data-Driven Guide
https://alpha-wiki.win/index.php/Case_Study:_How_8Win_Cut_100%25_Slot_Bonus_Withdrawals_to_Minutes_and_Rewrote_the_Fine_Print
8Win promotions: frequency snapshot and what the numbers tell us The data suggests that 8Win does not follow a single, fixed schedule for promotions