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RTP and volatility in plain language — what the numbers really tell you

Two numbers repeat on every game page in this catalog: return percentage and volatility. They look simple — one is a percentage, the other a word — and that's precisely why they're misused more often than any other slot info.

In this piece we go through what the numbers tell, what they do not tell and how we read them from games into the catalog. No formulas, no systems, no promises of wins.

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Category: Basics Updated 3.8.2026 Source: game-specific details

What RTP means — and what it does not mean

RTP i.e. return to player is the game’s return percentage: the share of all stakes put into the game that the game pays back to players over the long run. The figure is a built‑in property of the game, calculated by the provider by simulating millions of spins. If the RTP is 96 percent, for every euro wagered the game pays back an average of €0.96 and the house edge is €0.04.

The main thing is to understand what the number no tarkoita. It does not mean that a one-hundred-euro stake would return 96 euros. It does not mean that the game is "owed" after a long losing streak, nor that after a big win the game would start paying out worse. Each spin is drawn separately, and the game does not remember the previous spin. RTP is the long-term average for the whole lifetime of the game, not a promise to one player or one evening.

Why RTP doesn’t guarantee anything from a single evening

A hundred or a thousand spins is a statistically negligible sample of a game whose return is calculated from millions of spins. In practice short sessions scatter widely around the mean: most end up below the average and a few far above it.

The reason lies in what the return is made of. When a game's max win is tens of thousands of times the bet, a large slice of the overall return depends on extremely rare hits. Those hits pull the average into place, but a typical spin is not the average. In other words: the average is not the usual experience but the focus of the long tail.

One sentence to remember

RTP tells the game's long-term cost, not what will happen tonight. All games with a return below one hundred percent charge you to play — it's the price of entertainment, not an investment.

RTP range: same game, different figure at different casinos

Many studios deliver several return versions of the same game, for example 96, 94 and 92 percent. The casino chooses which version it will use. The game looks exactly the same, the name is the same and the graphics are the same, but the return is different. This is called the RTP range, or as an RTP range.

The practical tip follows directly from this: always read the number from the casino info panel you are playing at. The rules tab shows the percentage that is run in that particular game. We record the listed base level in the catalog and note separately when the game belongs to a range series — for example Medusa Dark Ages is such a game.

Volatility = the rhythm of wins

Volatility, or variance, does not tell you how much the game pays overall, but how se maksaa. Matalan volatiliteetin pelissä voittoja tulee tihesti mutta pieninä; korkean volatiliteetin pelissä kuivia jaksoja on pitkiä ja voitot harvoja mutta isoja. Kaksi peliä voi päätyä täsmälleen samaan palautusprosenttiin täysin eri reittiä.

This is the feature that practically decides whether the game feels right for you. The same €100 bankroll lasts a long time in a low-volatility game and produces a steady trickle of small wins; in a high-volatility game the same bankroll can disappear in ten minutes or triple in a single bonus round.

The table can be scrolled horizontally.
Volatility levels: what they mean for the feel of the game
LevelWin rhythmWhat it means for your bankroll
LowFrequent small wins, rarely hits bigger than the stake Bankroll moves slowly, session stretches long, peaks stay small
Mid levelMix: small hits and occasional larger bonuses The most common compromise — the bankroll holds up, but you can still have a big swing in an evening
HighLong dry spells, rare hits carry the whole result Keep the stake small, otherwise your bankroll will run out before the bonus

The table describes how levels typically feel. The official volatility of an individual game is always read from the game's own details — of the 58 games in our catalogue 21 are marked as high volatility games.

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How volatility shows up in the game

Not all studios report volatility at all. In that case it can be inferred roughly from a few indicators shown in the game's own info:

  • Maximum win multiplier. The higher the cap, the more likely the tail of the payout distribution is long and the base game dry.
  • Bonus share. If most of a game's potential is tied to free spins or bonus buy, the base game is effectively waiting.
  • Paytable gradation. When the top symbol pays many times more than the others, the outcome depends on a few hits.
  • Hit frequency, i.e. hit rate. If it is stated, a low percentage indicates rarer but larger wins.

One common misconception should be corrected: bonus buy ei ole sama peli halvemmalla. Purchased bonuses often have their own listed return percentage, and it can differ from the base game. The same applies to separate extra-bet modes like the bonus bet option. If a figure isn't disclosed, you shouldn't assume one.

Maximum win as a multiplier — what 15 000× means in euros

Maximum win is expressed as a multiplier of the bet, not in euros. A 15 000× multiplier means a €3 000 cap at a €0.20 stake and a €15 000 cap at a €1 stake. The cap is a theoretical upper limit that is reached in practice extremely rarely and typically only in a perfect bonus-round run.

Therefore the maximum win should be read as a description of the game's character rather than an expectation. The range in our catalog is large: below are a few examples of how different games can fit under the same theme.

The table can be scrolled horizontally.
Examples from the catalog — figures from the games’ own data
GameStudioRTPMaximum winVolatility
Medusa MegawaysNextGen97,63 %50 000× not reported
Medusa Dark AgesSkywind Group96 %15,000× medium–high
Eye of MedusaHacksaw Gaming94,24 %10 000× not reported
Medusa's MadnessPlay'n GO94,52 %2 000× not reported
Legend of MedusaSYNOT96,01 %500× not reported

Note two things. The highest payout doesn’t necessarily go hand in hand with the lowest risk: the 97.63 percent game is also the one with a 50,000× cap. And when volatility isn’t stated, the field reads “ei ilmoitettu” — we don’t fill the gap with a guess. The full list can be found from the slot catalog and sorted by mechanic about collections.

How we read the numbers for the catalog

The procedure is dull and intentionally so. Each game's RTP, volatility and maximum win are taken from the game's own official information — the info panel or the developer's published game data. A number is not rounded or copied from another review. If the information hasn't been published, the game page states that it has not been disclosed.

Volatility is only marked when the provider declares it themselves. Games in the Range series are marked separately because the casino's choice changes the reading. When a game is updated, the data is updated too — and the page shows the date. The entire working method is explained on the page How we test.

What we don't do

We do not publish a number we haven't seen in the source. We do not claim to have tested things we haven't tested. Nor do we offer an estimate of when a game will “pay out” — such information does not exist.

What to do with the numbers

Three figures together give a usable picture of the game before the first spin. Here's how to read them:

  1. Choose the pace first. Decide whether you want a long even session or rare big jumps. Volatility determines this, not RTP.
  2. Size your bet according to volatility. A high-volatility game and a big stake is a combination that eats the bankroll before the game has time to show anything.
  3. Compare RTP only between similar games. Between two otherwise identical games choose the higher return — but don’t expect the difference to show up in one evening.
  4. Read the roof correctly. A large multiplier indicates the nature of the game, not what is likely to happen.
  5. Decide your budget and the clock before starting. This is the only part that is completely under your control — read more on the page responsible gambling.

And if the game is played with bonus funds, note that wagering terms can limit which games contribute to the requirement and how large a stake is allowed. Bonus terms are always read from the casino's own pages — our on our casino list ne on luettu ja kirjattu päivämäärän kanssa.

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Short summary

  • RTP is a long‑term return, not a forecast for one evening.
  • RTP range tarkoittaa, että sama peli voi olla eri kasinolla eri lukemalla — check the info panel.
  • Volatility tells the rhythm of wins and decides how the game feels.
  • Maximum win is a multiplier of the stake and describes the game’s character, not its expectation.
  • A missing figure is marked as missing — that’s information too.

Frequently asked

Quick answers about RTP:stä ja volatiliteetista

Is a high RTP always better?

A higher return means a smaller house edge over the long run, so between two otherwise identical games you should choose the higher one. It won't make much difference to the result of a single evening, though: variance is far larger than a difference of a few percentage points.

Can you determine the volatility yourself if it's not stated?

Indicative signs are the max win multiplier, the payout table gradation and how much of the game's potential depends on bonus rounds. These are inferences, not an official figure — which is why we only mark volatility in the catalog when the game's own data reports it.

Does the bet size affect the RTP?

No in the base game. The RTP is the same regardless of stake size, and wins are multipliers of the bet. Exceptions are separate add-on stake options like bonus buy or bonus bet, which often have their own RTP listed.

Why does the same game show a different RTP on different casinos?

Many studios deliver multiple return versions of a game, and the casino chooses the version to be used. The name and graphics are the same, the return is not. Always check the figure from the casino's info panel where you play.

Where do the figures on this site come from?

From the game's official data. If a figure hasn't been published, we will display it and will not guess or round the figure based on other sites. The method is described on the page How we test.

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