Modern online slots are packed with features, from free spins rounds to cascading reels. Knowing how they work helps you choose games that suit your budget. Here are the most common ones.
1Free spins rounds
Usually triggered by landing three or more scatter symbols. The round plays a set number of spins at your stake, often with extras such as multipliers or sticky wilds. These in-game free spins are different from bonus free spins a casino gives you.
2Wilds and multipliers
Wilds substitute for other symbols to complete wins. Multiplier wilds also multiply the win they’re part of. Some games add a global multiplier that grows during a feature.
3Cascading reels
Winning symbols disappear and new ones drop in, which can create several wins from one spin. Many cascade games add a multiplier with each consecutive win.
4Megaways
Megaways slots change the number of symbols on each reel every spin, giving up to 117,649 ways to win on many titles. They’re usually high volatility.
5RTP and volatility
Features don’t change a slot’s RTP, which is the long-run return. They do affect volatility: games where most of the return comes from rare features swing more. Read our guide to RTP and volatility.
18+. Set a deposit limit before you play, and treat any spend as the cost of entertainment. Free, confidential help: BeGambleAware.org or the National Gambling Helpline on 0808 8020 133.