Casino RTP Database — 78 Slot RTPs Compared (2026)

Casino Slot RTP Database (April 2026)

78 slot titles · 9 providers · Last verified April 2026 · Compiled by the newcasino.ai review desk

If you’ve ever wondered why your mate seems to hit better sessions on Book of Dead than you do, there’s a chance you’re not playing the same game. A slot title can ship with three or four different RTP (Return to Player) configurations, and the operator picks which one to deploy. The difference between a 96.21% build and a 94.25% build isn’t cosmetic — it’s roughly $2 out of every $100 wagered, compounded across thousands of spins.

We started keeping this database after noticing that one Curacao-facing casino we review was quietly running the 88.12% version of Wolf Gold while advertising “all Pragmatic titles.” That was embarrassing for everyone involved. Below is our working list of titles that ship with variable RTP configurations, what each configuration is, and (to the best of our knowledge from session logs, regulatory filings and provider documentation) which casinos use which version.

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Source notes: RTP values taken from provider mathematical documentation (Pragmatic Play build notes, Play’n GO configuration manuals, Nolimit City game sheets), cross-referenced with published RTP trackers and player-shared screenshots of in-game info panels. Casino attributions are based on those published sources; where we could not corroborate a figure, the column is left blank.

How we built this database

Step one was collecting every RTP variant we could find for each title. That meant pulling the provider’s build sheet where it’s been disclosed, and cross-referencing published RTP trackers and player-shared screenshots of game info panels. Pragmatic Play and Play’n GO both publish build sheets to their operator-facing portals, and screenshots of those circulate on affiliate forums. Nolimit City is more secretive — their configurations have to be pieced together from math model whitepapers.

Step two was checking which casinos run which version. For each casino we log the RTP shown in published trackers and player-shared info-panel screenshots. That evidence accumulates slowly, which is why this database has gaps. Where a cell says “several Curacao brands” rather than naming names, it’s because we have evidence of at least three but haven’t confirmed which three — we’d rather be vague than defamatory.

Why RTP configurations exist at all

When a provider licenses a game to an operator, they’re effectively selling a math model. For most titles, there’s an “intended” RTP that the game designer built around — usually the high version. Operators in competitive markets (UK, Sweden, Denmark, Ontario, Malta) run the intended build because the regulator requires it to be disclosed and players can easily compare across brands. Operators in lower-transparency markets frequently licence the low-RTP build because it’s cheaper per month and the player can’t easily tell.

The spread matters. On Wolf Gold, the gap between the 88.12% build and the 96.01% build is enormous — roughly eight dollars out of every hundred wagered, which over a year of play compounds into thousands. If your casino is running the low build on a slot you play for hundreds of hours, you are literally playing a different game than a friend on a tier-1 site.

How to check RTP yourself before playing

Every regulated casino is required to surface RTP inside the game’s info panel. On most titles you hit the “i”, “?”, or hamburger menu in the top corner, then scroll to “Return to Player” or “Theoretical RTP.” If the figure shown matches the high build in our table, you’re fine. If it matches the mid build, you’re on a compromise operator. If it matches the low build, you now know the real number and can decide whether the game is worth playing at that price. Some titles are still fine at the lower build; a 94% Gates of Olympus is not.

Some casinos (mostly older Curacao operations) hide or remove the info panel altogether. Take that as a red flag. Our how-we-review methodology downgrades any site that doesn’t make RTP visible, because there’s no legitimate reason to hide a published number.

Games where the RTP doesn’t actually vary

A handful of well-known titles ship with a single configuration, which is why they’re missing from the main table. Starburst (96.09%), NetEnt’s Aloha! Cluster Pays (96.42%) and Mega Moolah (88.12% — yes, it’s bad, but it’s a jackpot slot and the long tail explains it) all come as a single build. If a casino is running these, you’re getting the same maths as every other casino that runs them.

Related reading on newcasino.ai

If you want to understand how we think about provider audits more broadly, start with our review methodology. Two things we cannot tell you: which build any given casino is running today, and whether it has changed since we looked. Operators can switch build without notice and rarely announce it. Check the figure yourself in the game’s info panel before you play — the method is above, it takes ten seconds, and it is the only reliable answer

Use this data

If you run a casino affiliate site or review publication, you’re welcome to reference or link to this table. A citation back to newcasino.ai is appreciated but not required. Corrections and additions are very welcome — we’d rather be told we got a data point wrong than have it sit here being wrong. Email the desk or open an issue on our public correction log.

Last updated April 2026. This table is overdue a refresh — RTP builds change without notice, so treat every figure here as a starting point and confirm it in the game itself.