Slot features and mechanics
How modern slot features work, and what each one does to volatility and to the cost of a session.
Megaways explained
Reels that change height on every spin, where 117,649 ways comes from and why these games swing hard.
Bonus buy explained
Paying to jump straight into free spins: what it costs, how its RTP compares and why budgets go fast.
Cascading reels, free spins and multipliers
Tumbling reels, free spins, wilds and multipliers: how modern slot features shape every session.
Why features matter for your budget
Modern slots are built from a handful of mechanics: Megaways reels that change size on every spin, cascades that replace winning symbols, multipliers that grow during a feature, and bonus buys that skip straight to the bonus round.
None of them changes the RTP a game publishes, but each changes how that return is spread out. Most of these features move wins into rarer, larger events, so the same budget lasts fewer spins and the swings get bigger.
The guides below explain each mechanic in turn and link to the games that have it, ranked by the numbers their studios publish.