When you play online slots, RTP tells you the average money returned over...

https://www.booknose.win/understanding-game-mechanics-means-looking-beyond-flashy-graphics-to-stuff-like

When you play online slots, RTP tells you the average money returned over time—think of it as your long-term payback rate. Volatility shows how often and how big wins might be, so you’re not left guessing if it’s mostly small wins or rare big hits