Book of Ra Deluxe: Slot Two Casinos Price Differently

Book of Ra Deluxe Strengths and Weaknesses

Book of Ra Deluxe at Two UK-licensed Casinos

Figures current as of 8 Oct 2026; the operator's live terms prevail.

Two Casinos, One Game, Two Returns

Admiral Casino UK publishes 92.13% for Book of Ra Deluxe. Grosvenor Casinos publishes 94.26% for the same title. Both hold UK licences, both are required to disclose the return of the game they run, and both did.

Turned into what the house keeps, the gap stops looking small: 7.87% against 5.74%, which is more than a third more per stake. On £100 wagered through the game that is £7.87 expected to go, against £5.74.

The Lowest Figure Comes from the Maker's Own Brand

Admiral is a Novomatic brand, and Greentube is Novomatic's online arm. The lowest published configuration we found is therefore running at a casino inside the studio's own group.

We are not claiming any rule was broken; operators are allowed to run different return configurations of the same game. It is worth stating plainly because it undercuts the intuition that the maker's own casino would run the friendliest build.

Why the Studio's Silence Matters Here

Where a studio publishes the full list of its RTP configurations, a reader can hold a casino to it. Play'n GO does exactly that for Book of Dead. Five builds sit in one public table with the default marked, so an operator's figure can be checked against it.

Greentube publishes no such table for a reader. Its own game page has a Key Data block built for exactly these fields — licence number, Game ID, return, bet limits, maximum exposure, certificate — and prints "Client login for more data" in place of the values. The operator figure is therefore the first and last word, and if two operators disagree there is nothing above them to appeal to.

The Mechanics Come from the Casino Too

Greentube's own game page gives the trigger — «land 3 or more ‘Book of Ra’ symbols anywhere on the reels to trigger 10 Free Spins» — and says a special symbol is selected at random before the feature begins. What only the casino publishes is what that symbol is worth: the archived Grosvenor Casinos page, the same one that gives 94.26% and the ceiling, adds that if it lands two, three, four or five times its value is multiplied by the paylines.

During those spins the chosen symbol pays on its own terms. If it lands two, three, four or five times, the page says its value is multiplied by the paylines, and that the value itself depends on the symbol and the stake. The same page describes a Gamble button that appears on any win of at least two adjacent symbols starting from the left, and offers to double it.

There is no paid feature of any kind. Nothing here is a purchase, an ante or a bonus buy, and the only way into the free games is the scatter trigger. Every figure and every rule described above comes from an operator's page rather than a studio document — the absence of a paid feature included, because nothing upstream of the operator says anything at all.

What the Deluxe Ceiling Looks Like

Admiral publishes the ceiling as x5010, which is an oddly specific number and reads like a figure from the maths rather than a marketing round-up. Grosvenor's archived page publishes a ceiling too, and it does not line up: "Max win: 5000x line bet". A multiple of the LINE bet is not a multiple of the total. So the two casinos disagree about the ceiling as well as the return, and about the stake range on top of that — and in units a reader has to convert before the two numbers can even be compared.

That difference in units is familiar from Book of Dead, where the client prints 250,000 coins and the multiplier has to be derived. Here both figures are multipliers and they still do not compare: one multiplies the total stake, the other a single line, so the same game reads as x5010 at one casino and 5000x at the other.

How to Check Before You Deposit

Open the game information the casino you intend to use publishes and read the return there. In several markets the operator is required to state it, which is exactly how both figures above were read.

If the panel is silent, treat that silence as the answer. We do not recommend taking a catalogue's percentage for this title. Eight different returns are published for this family by operator pages, and not one by a studio document. Secondary catalogues circulate four values and name no source; one repeats Grosvenor's 94.26% and another the 95.03% it publishes for Deluxe 6, which is why this site does not use them.

What Else Admiral Casino Publishes for This Game

Our Book of Ra Deluxe Verdict and Rating

Key Terms Used on This Page

RTP configuration

One of several published return configurations of the same game; the operator picks which runs.

House edge

What the casino keeps over the long run — 7.87% at 92.13%, 5.74% at 94.26%.

Geo-block

A refusal based on where the request comes from; Grosvenor's live pages return 403 to us, so we read an archived copy.

Max win multiplier

The ceiling expressed as a multiple of a bet — and which bet is the question, because one casino multiplies the total stake and the other a single line.

Deposits and identity checks stay on the operator's own secure site.

What Else Do Readers Ask?

The questions here are about which version you get, not about how the game plays.