The article compares UK and US online slot rules, including testing, payout...

https://mega-wiki.win/index.php/Why_Do_Modern_Slots_Have_So_Many_Features_Compared_to_Older_Games%3F

The article compares UK and US online slot rules, including testing, payout information and state-by-state access. UKGC testing provides a formal benchmark; in New York, sports betting is legal, but online casino play is not