UK slots face UKGC testing, while US rules vary by state. A 96.5% RTP example...

https://spark-wiki.win/index.php/New_York_Has_Mobile_Sports_Betting._Why_Not_Online_Casino_Games%3F

UK slots face UKGC testing, while US rules vary by state. A 96.5% RTP example shows how return figures work, but it is not a promise of results. The article also contrasts online casino access with New York’s sports betting market.