Key takeaways
- Also called tumbles or avalanches.
- Several wins from one stake.
- Often paired with multipliers.
- Standard on Megaways.
In shortOn a cascading machine, winning symbols are removed and new ones drop into the gaps, which can create further wins from the same spin.
How a cascade runs
- A spin lands and wins are paid.
- The winning symbols vanish.
- Symbols above drop down; new ones fill the top.
- Any new win is paid and the process repeats.
- The spin ends when no win forms.
Why designers use it
One stake can produce a chain of wins, and a multiplier that rises with each step turns a long chain into a large prize.
Examples
| Slot | Developer | RTP | Volatility | Max win | Layout |
|---|---|---|---|---|---|
| Sweet Bonanza | Pragmatic Play | Varies by version (96.48% to 96.51% quoted) | High | 21,100x | 6 reels, 5 rows |
| Gates of Olympus | Pragmatic Play | 96.50% | High | 5,000x | 6 reels, 5 rows |
Speed
A long cascade takes time, so cascading machines play fewer spins an hour than a simple line slot.
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Slot figures are developers' published defaults, each confirmed against two sources; the version at your casino can differ. UK land-based stake and prize limits and online rule dates were checked against Gambling Commission and licensing authority sources on 6 October 2026. History follows commonly cited accounts. Offer terms dated 5 October 2026. How we check. 18+. Free help: 0808 8020 133 or safer gambling.
Frequently asked questions
What are cascading reels?
Reels where winning symbols are replaced.
Same as tumbles?
Yes.
Do cascades cost extra?
No.
Which slots have them?
Sweet Bonanza, Gates of Olympus, Megaways titles.