Cascading reels remove winning symbols after a win and let the remaining symbols fall, with new ones dropping in from above. If the new arrangement forms another win, the process repeats, all within the same paid spin.
One stake can therefore produce a chain of wins. Many games add a multiplier that rises with each cascade in the chain, which concentrates value in long chains and pushes volatility up.
Studios use their own names for the same idea: NetEnt calls it Avalanche, Pragmatic Play calls it Tumble, and other names include rolling reels and chain reactions. It is standard in cluster pays, pay anywhere and Megaways games.
A cascade sequence is one game round, so it settles as one result and the stake limit applies once. See our cascading reels feature page.