RTP describes the share of stakes a game is designed to return over a very...

https://front-wiki.win/index.php/Variance_vs_Volatility_in_Slots:_Are_They_the_Same_Thing%3F

RTP describes the share of stakes a game is designed to return over a very large number of plays. A 96% RTP means a 4% house edge on average—not that you’ll get 96% back in one session