The Tumbling Reels mechanic in Sweet Bonanza, also known as Cascading Reels, allows players to receive multiple payouts in a single spin.
When you win in Sweet Bonanza, all symbols involved in the winning combination disappear from the screen, and new symbols fall from above to fill the empty spaces. This allows players to receive additional payouts if the new symbols create another winning combination. If this happens, the process repeats again and again until there are no more winning combinations.
Each time a cascading payout occurs, the payout multiplier increases by 1. For example, if you win a second time using the cascading reels mechanic, your payout will be multiplied by 2, on the third time - by 3, and so on. The maximum multiplier you can get is 100x.
The Cascading Reels mechanic makes Sweet Bonanza very attractive to players as it gives them more opportunities to win. However, it should be remembered that wins are not guaranteed, and players may lose their bets if they do not receive enough cascading payouts.