Slot rules can look simple until a game mixes paylines with clusters or adds...

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

Slot rules can look simple until a game mixes paylines with clusters or adds several kinds of wilds and scatters. This article explains how wins form, which symbols wilds can replace, how scatters unlock bonus features, and what they cannot do