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A cascade removes winning symbols from the grid and drops new ones into the empty spaces. If the new arrangement creates another win, it cascades again — this chain continues until no new wins form, all within a single paid spin.

The multiplier is a number that scales your win amount. In Thunder Zeus cascade variants, it starts at 1x and increases by one with each consecutive cascade during a feature round — so the fourth cascade pays at 4x your line win.

Volatility describes how often and how large payouts tend to be. High-volatility Thunder Zeus versions pay less frequently but with larger amounts when they hit; medium-volatility versions distribute smaller wins more evenly across spins.

Scatters are special symbols that trigger features regardless of their position on the reels — they don't need to land on a payline. In Thunder Zeus, three or more lightning-bolt scatters typically activate the feature-spin round.

An expanding wild stretches to fill an entire reel column when it lands. In Thunder Zeus feature rounds, this wild expansion creates multiple winning combinations across adjacent reels simultaneously, boosting payout potential during that spin.

Cluster pay awards wins when a group of identical symbols connect horizontally or vertically — no paylines needed. Thunder Zeus Cascade uses this mechanic: match five or more connected symbols and they count as a winning cluster.

Megaways is a mechanic where each reel shows a random number of symbols per spin, changing the total ways to win on every round. Thunder Zeus Megaways can produce thousands of win-ways depending on how many symbols each reel reveals.

RTP stands for Return to Player — a theoretical percentage indicating how much of total bets a slot returns over millions of spins. It's a long-term statistical average, not a per-session prediction. Check the in-game paytable for each Thunder Zeus variant.

Hit frequency is how often a slot produces any winning combination. A Thunder Zeus variant with higher hit frequency gives small wins more often; one with lower hit frequency spaces wins further apart but tends toward larger individual payouts.

Feature spins are rounds awarded by scatter triggers where special rules apply — higher multipliers, more wilds, or different reel configurations. In Thunder Zeus, feature spins usually come with a rising multiplier that doesn't reset between spins.