RTP and volatility: the two numbers that decide how a slot plays

RTP = Return To Player, the percentage a game returns over millions of spins.

A slot at 96% RTP returns €96 on average for every €100 wagered — across all players, over the lifetime of the game.

⚠️ It does not mean you get €96 back from your €100. In a single session you might get nothing, or five times your stake.

What it is genuinely useful for: comparing two games. At 96.5% versus 94%, the first is the better choice with the same money, over time.

Two games at exactly the same 96% RTP can behave nothing alike.

Low volatility: small wins, often. The balance drains slowly and the session lasts longer.

High volatility: rare wins, large ones. Two hundred spins with nothing, then 300×.

⚠️ For a bonus with a rollover, volatility matters as much as RTP. On a high-volatility game with a seven-day deadline, the balance can run out before you clear the requirement — and the bonus expires with it.

Low volatility is usually the safer choice for clearing wagering; high volatility is the one that produces the screenshots.

This surprises most people: many providers ship the same slot in several RTP configurations, and the casino picks which one to run.

The same game can run at 96.5% at one casino and 94% at another. Same name, same artwork, different maths.

This is why an RTP table copied from a third party is worth nothing.

⚠️ Check it inside the game: open the info menu — usually an (i) or a gear icon — and the RTP of the version you are actually playing is written there.

Our slot catalogue publishes RTP verified at source, not copied.

Among the brands we checked, Konibet puts a «ライブRTP» (live RTP) entry in its menu — the actual measured return of its games, in real time.

That is unusual. Most casinos publish RTP nowhere at all.

⚠️ Live RTP is a short-term measurement, not the theoretical figure. «This game is running at 103% today» does not mean the game returns 103%. Until it approaches millions of spins, it is just short-term noise.

It is still worth something: publishing it at all says something about the operator.

Some casinos run exclusive versions of popular slots under their own name.

These appear in no comparison table, because they exist only there. There is no way to know whether the RTP matches the original — except by checking the in-game info screen.

⚠️ They are not necessarily worse. They are simply unverifiable from outside, and that alone is reason enough to check before putting money in.