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Free labVirtual credits only · nothing to win

Slot RTP & Volatility Simulator

“96% RTP” sounds generous. Here's what it looks like over 500 spins, a thousand times over — including the “wins” that pay back less than you bet.

Machine settings

—Hit frequency
—“Wins” that lost money
—Sessions ending ahead
—Sessions that ran dry
—Median ending balance
—Biggest single win

Ending balance across sessions

Try a single spin

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Credits: 100.00 · virtual, no value

Pay table for these settings

A simplified model: probabilities are scaled so the long-run return equals the RTP you chose. Real machines use far larger pay tables, but the math works the same way.

RTP is a promise about millions of spins, not yours

RTP (return to player) is the share of all money wagered that a game is designed to pay back over its lifetime. A 96% game keeps 4% on average: $4 of every $100 wagered. But you don't play the lifetime of the machine. You play a few hundred spins, and that is where volatility takes over.

Expected loss = bet × spins × (1 − RTP) $1 × 500 spins × (1 − 0.96) = $20 expected — but the spread around $20 is enormous.

Low-volatility games hand back small amounts often, so your balance drifts down slowly. High-volatility games pay rarely but big, so most sessions lose faster while a few win big. Both end at the same average. Learn more in RTP vs. Volatility and The Near-Miss Effect & Losses Disguised as Wins.

Tip: watch the “wins that lost money” number. When a spin pays $0.50 on a $1 bet, the machine celebrates — but you are down $0.50. Researchers call these losses disguised as wins.