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Casino Glossary

Plain-English definitions for terms used across our UK casino comparisons, especially around bonuses and wagering.

Wagering Requirement
The number of times you must bet bonus funds before withdrawing winnings. A £50 bonus with 35x wagering means betting £1,750 before cashing out. Lower multiples are generally fairer.
Game Weighting
Not all games contribute equally toward wagering. Slots often count 100%, while table games like blackjack may count 10% or be excluded entirely. Always check which games count before accepting a bonus.
RTP (Return to Player)
The theoretical percentage a game returns to players over millions of spins. A slot with 96% RTP keeps £4 of every £100 wagered on average. RTP is a long-term statistical measure, not a session guarantee.
Free Spins
Complimentary slot rounds, usually tied to a specific game. Winnings may be paid as bonus funds with wagering attached, or as cash with no playthrough — the distinction matters enormously.
Matched Deposit
The operator adds a percentage of your deposit as bonus funds — e.g. 100% up to £100 means depositing £100 gives you £100 in bonus. The match amount and wagering terms together determine real value.
UKGC Licence
Permission from the UK Gambling Commission to offer gambling services to UK residents. Licensed operators must meet strict standards for fairness, responsible gambling tools and dispute resolution.
GamStop
A free UK self-exclusion scheme covering all licensed operators. Once enrolled for your chosen period, you cannot open or use accounts at any UKGC-licensed gambling site.
Volatility
How a slot pays out. Low-volatility games return smaller wins frequently; high-volatility games pay less often but with larger potential hits. Neither is better — it depends on your preference and bankroll.
Live Casino
Real-time table games streamed from a studio with human dealers. Evolution, Playtech and Pragmatic Play Live are major providers. Quality depends on stream stability, table variety and betting limits.
Cashback
A percentage of net losses returned as bonus funds or cash, usually weekly. Cashback often carries lower wagering than matched-deposit offers, making it easier to extract value.
Expiry Period
How long you have to use a bonus or complete wagering before it is forfeited. Short windows (7 days) pressure play; 30-day periods give more room to meet requirements at a comfortable pace.
Maximum Bet Rule
A cap on individual bet size while a bonus is active — often £5 per spin. Exceeding it can void the bonus and any associated winnings, even accidentally.

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