This guide explains how paylines differ from cluster wins, which symbols wilds...
https://johnnywrbo401.wpsuo.com/same-theme-different-slot-rules-how-can-that-be
This guide explains how paylines differ from cluster wins, which symbols wilds can replace, and how scatters trigger bonus rounds. It also shows why a rising meter tracks progress but never promises a payout, so you can read slot rules before you play.