Rainbow Ray by Endorphina: headline RTP 96.12%.
An RTP of 96.12% means a house edge of 3.88% — the expected cost is 3.88 units per 100 staked over the long run, whatever a single session does.
Against our catalogue the number is below the median of 96.13%, higher than 49% of the games whose RTP we verified. That comparison matters more than the raw figure, because "96%" only sounds generous next to nothing.
Rainbow Ray is one of 181 Endorphina titles in our catalogue, a studio averaging 95.96% RTP across the games we could verify.
See the full Endorphina game list and RTP breakdown.
This title is tagged Irish, Leprechaun, St Patricks Day. A theme is art direction, not maths — two games sharing every symbol can be priced differently.
Rainbow Ray has a published RTP of 96.12%, a house edge of 3.88%. We have not yet found a casino serving it at a different RTP build.
Yes. Rainbow Ray has a free demo with the same mathematics as the real-money version — the only thing that changes is that the balance is not yours. A demo cannot tell you the RTP build a particular casino serves.
Rainbow Ray is a Endorphina game, so the outcome is produced by the studio's certified RNG rather than by the casino, and it is not provably fair in the cryptographic sense — you cannot recompute a spin from a seed. What the casino does control is which RTP build it serves. That is the real variable, and it is measurable.