Look up any slot’s real RTP, volatility, hit ratio and max win — plus the exact RTP build each casino runs for that game.
Providers ship the same slot in several RTP configurations — commonly 96%, 94% and 92% — and the operator chooses which one to run. The game looks identical, the maths does not. A lobby that does not print RTP per title is not telling you which price you are paying.
This tool holds the RTP we measured per casino for hundreds of games, so you can check a specific title before you play it rather than after.
Two percentage points of RTP is a doubling of house edge on a typical slot. Over a month of ordinary play that difference outweighs almost every rakeback programme in our database.
Where we have measurements from multiple operators, the best and worst build are shown side by side, and the full corpus is in our RTP builds report.
We can tell you the RTP a studio publishes and the builds we have observed at the casinos we track. We cannot see a lobby you are logged into, and no tool can read the configuration your session is running — that information sits on the operator’s side.
So treat a per-casino figure here as evidence about how an operator behaves rather than a guarantee about your next spin. Where an operator publishes per-game RTP in its own lobby, that is the authoritative source, and the fact that so few do is the reason this page exists.
It is the build being served, so yes — when the operator exposes it. The problem is that many do not, which is the gap this checker fills.
It lowers the long-run cost of playing. It does nothing for any individual session, which variance decides.