Volatility, Variance & Hit Frequency

RTP tells you the long-run average; volatility (variance) tells you how bumpy the ride is around it. High-volatility games pay rarely but large; low-volatility games pay often but small. Hit frequency — how often any win lands — is a related but separate number. All three are independent of RTP: a 96% game can be tuned low- or high-variance.

Take two 96% slots: one pays small wins constantly (low variance), the other pays almost nothing until a rare huge hit (high variance). Same expected loss, wildly different session outcomes — and wildly different bankrolls needed to survive them. RTP is the destination; volatility is how rough the road is.

Hit frequency is the percentage of spins that return anything at all — often 20–30% on slots. A high hit frequency full of sub-stake 'wins' can still be high-variance if the real RTP is carried by rare big hits. A game can pay you something often while still bleeding your bankroll.

Volatility is quantified as the standard deviation of return per bet. Higher standard deviation means a wider distribution of outcomes, which means you need a bigger bankroll to survive the swings long enough for the RTP to assert itself. Chasing losses on a high-variance game is a variance trap, not a strategy.

Volatility decides how likely a session ends up versus down, and how large the swings are — but it does not change the long-run edge. It changes how brutal the short run can be. Matching volatility to your bankroll and tolerance is the one genuine 'choice' a player has; it never turns a negative-EV game positive.