The site
About TopSlotsRTP What We Do and How
An independent record of what slots really pay, casino by casino.
Why this site exists
Most slot sites publish the RTP a studio advertises. That figure is often a ceiling rather than a fact.
Studios release games in several return configurations and let each casino license whichever suits its margins. The reels are identical, the bonus round is identical, the maximum win is identical — only the return changes. So the same slot can pay 96.71% at one casino and 94.51% at another, with nothing on screen to tell you which you've opened.
That gap is worth about £2.20 for every £100 you stake, and almost nobody checks it. TopSlotsRTP exists to make it visible.
What we publish
For every slot we track, two numbers: the return the studio published, and the best build we've found running at a casino we monitor. Where those differ, the operator has licensed something below the ceiling — and we name which casino runs the best version.
Alongside that: volatility, maximum win, mechanics, provider, and the date each figure was last confirmed. That date matters more than people assume, because a figure without one is close to worthless.
We also build tools, because a number on its own doesn't help anyone decide anything. Five of them, all free and none requiring an account — a calculator for expected cost, a simulator that graphs a real session, a side-by-side slot comparison, a wagering calculator for judging bonuses, and a budget planner.
How we check
By hand, one game at a time.
There's no clever way around it. The return a casino is running appears in the game's own information panel, so verifying it means opening that game at that casino and reading what's there. That's what we do, and it's the same check you could run yourself in about ten seconds — we've simply done it across enough games and operators that you don't have to.
The consequences are worth stating plainly. It means our coverage grows steadily rather than instantly, and it means every figure is a snapshot rather than a live feed. Operators renegotiate licensing and switch builds without announcing it, so a number that was right when we checked can quietly stop being right. That's why we date everything, recheck on a rolling basis, and tell you throughout the site to confirm in the game before you play.
We'd rather publish a smaller number of figures we've actually looked at than a large number we haven't. Our full method goes into more detail.
How we're funded
We don't operate gambling services. We do earn commission when you sign up through some of our links — that's how the site is funded.
It doesn't change the RTP figures we publish, which come from the game's own paytable and are what they are regardless of who pays us. It does mean you should read our casino recommendations the way you'd read anyone's: as informed opinion from a site with a commercial interest, checked against the numbers we show you.
What we don't do
We don't claim to predict outcomes, and we're suspicious of anyone who does. RTP is a long-run average across millions of spins by every player combined. It describes the cost of playing, not the result of your session, and no amount of analysis changes that.
We don't publish strategies for games that have none. We don't chase the newest release for the sake of it. And we won't tell you a slot is due, because slots are not due.
18+. Please gamble responsibly. If gambling has stopped being entertainment, support is available at BeGambleAware.
Written by Jon Pill, Senior Editor · Reviewed by Mark Gruetze · Last updated Jul 2026