RTP is the share of stakes a game is designed to return over a very large...
https://nova-wiki.win/index.php/Why_Do_People_Confuse_%E2%80%9CVolatility%E2%80%9D_With_%E2%80%9CRTP%E2%80%9D%3F
RTP is the share of stakes a game is designed to return over a very large number of plays, not a promise for one session. A 96% RTP means a 4% house edge on average