Learn slot rules: paylines pay on set lines, while clusters need matching...

https://dearblessings.com/slot-game-rules-the-details-behind-wilds-scatters-and-special-features/

Learn slot rules: paylines pay on set lines, while clusters need matching symbols side by side. Wilds can replace some symbols, not all. Scatters trigger bonus rounds. A meter shows progress, but never guarantees a win