When you play online slots, RTP tells you the percentage of wagers paid back...

https://danteuoqx487.theburnward.com/the-future-of-online-gaming-transparency-what-players-need-to-know

When you play online slots, RTP tells you the percentage of wagers paid back over time, so a 96% RTP means you might get back $96 for every $100 bet—eventually