Slot and free spins guides
How slots work, what spins are worth and the UK rules that shape every game, with 20 key terms explained in full.
Guides
Slot terms explained
- Wild symbol
- Scatter symbol
- Multiplier
- Tumble (cascading reels)
- Hold and win
- Cluster pays
- Retrigger
- Sticky wild
- Expanding symbol
- Hit frequency
- Max win
- Bonus buy
- Progressive jackpot
- Wagering requirement
- Free spins feature
- Payline
- House edge
- Random number generator (RNG)
- Paytable
- Money collect
Quick answers
Slot figures are developers' published defaults, each confirmed against two sources; your casino may run a lower RTP. Offer terms dated 9 October 2026. How we check. 18+. Free help: 0808 8020 133 or safer gambling.