Last updated: 11-07-2026
Book of Ra launched in 2005 and is one of the most recognised names in the pokies world — a 5-reel, 9-payline slot built around an ancient Egyptian explorer theme, with an expanding symbol mechanic that still gets copied by newer titles two decades later. The core loop is simple: land three or more Book scatters, trigger 10 free spins, and one symbol gets randomly selected to expand across entire reels for the duration of those spins. When it's a high-value symbol, that expansion can produce genuinely large wins in a short burst. Book of Ra is a Novomatic/Greentube title — this page covers how the expanding symbol mechanic actually works, why the RTP figure you see matters more than most players realise, and how it compares to Cleopatra's Gold if you're weighing it against the RTG Egyptian-themed titles elsewhere in the Ozwin lobby.
What is Book of Ra, and why does it still matter to Australian players?
Book of Ra launched in 2005 and is one of the most recognised names in the pokies world — a 5-reel, 9-payline slot built around an ancient Egyptian explorer theme, with an expanding symbol mechanic that still gets copied by newer titles two decades later. The core loop is simple: land three or more Book scatters, trigger 10 free spins, and one symbol gets randomly selected to expand across entire reels for the duration of those spins. When it's a high-value symbol, that expansion can produce genuinely large wins in a short burst. The graphics are dated by modern standards — this is a 2005 release, and it looks like one — but the mechanic itself is the reason the title has stayed relevant.
What most comparison pages don't tell you clearly is that Book of Ra doesn't exist as a single fixed game. Novomatic distributes it with several different RTP configurations, and individual operators choose which one to deploy. The default sits at 96.06%, but variants running as low as 88.21% exist in the wild. That's not a small gap — over a long session, the difference between 96.06% and 88.21% compounds into real money lost. If you do find Book of Ra at Ozwin, checking the in-game paytable for the exact RTP figure before you commit a session budget is the single most useful thing you can do.
| RTP Variant | Status | Impact on A$1,000 Wagered | Notes |
|---|---|---|---|
| 96.06% | Default / most common | Expected loss ≈ A$39.40 | The figure most comparison sites quote. Not guaranteed at every operator. |
| 95.10% | Common secondary variant | Expected loss ≈ A$49.00 | Roughly A$10 worse per A$1,000 than the default variant. |
| 94.26% | Operator-selected | Expected loss ≈ A$57.40 | Verify in paytable — not disclosed on most lobby pages. |
| 92.13% | Lower-tier configuration | Expected loss ≈ A$78.70 | Almost double the expected loss of the default variant. |
| 90.05% | Lower-tier configuration | Expected loss ≈ A$99.50 | Below AU pokie average of roughly 96%. |
| 88.21% | Lowest published variant | Expected loss ≈ A$117.90 | Roughly 3x the expected loss of the 96.06% version. Avoid if a choice exists. |
Author's tip from Connor Blake, Independent iGaming Reviewer & Player Safety Analyst: "Novomatic games rarely display their exact RTP variant on the lobby thumbnail — you have to open the game and check the info or paytable screen. If that screen doesn't clearly state a percentage, treat it as a red flag rather than an oversight. A game confident in its return rate shows the number."
How the expanding symbol free spins actually pay out
The free spins round is where Book of Ra's entire design lives or dies. Land three, four, or five Book scatters on the base game and you're awarded 10 free spins — the same number regardless of how many scatters triggered it, though more scatters typically means a better starting position. At the start of the round, one symbol is randomly selected from the paytable to become the expanding symbol for the full 10 spins. If it lands anywhere on a reel during those spins, it fills the entire reel. When that symbol happens to be a high-value one — the explorer character or the golden idol, depending on the build — landing it two or three times across the 10 spins can produce a payout that dwarfs anything the base game offers.
The trade-off is variance. High volatility means those 10 free spins don't come around often, and when they do, there's a real chance the randomly selected expanding symbol is a low-value one, in which case the round pays modestly and ends without fanfare. This is the standard high-volatility pattern: long stretches of base-game spins between triggers, occasional dry free spins rounds, and the rare big hit that the whole design is built around. A gamble feature — double-or-nothing on any win — is also available if you want to add an extra layer of risk on top, though it's optional and doesn't affect the base RTP.
There's also a mechanical detail worth understanding before you judge Book of Ra against newer releases: the paylines are fixed at 9, not adjustable, and every payline pays left to right only — there's no both-ways or scatter-anywhere pay structure here. That's typical of 2005-era Novomatic design, and it means the maths behind each spin is comparatively simple next to a modern 243-ways or cluster-pays title. Simple isn't necessarily worse — some players specifically prefer the predictability of fixed paylines over the more chaotic-feeling structures in newer slots — but it does mean the game rewards fewer distinct winning combinations per spin than most of what's currently in Ozwin's own library.
Book of Ra vs Cleopatra's Gold — two very different Egyptian-themed jackpot approaches
If you're comparing Egyptian-themed titles at Ozwin, Cleopatra's Gold is the RTG alternative worth knowing about — it trades Book of Ra's expanding-symbol free spins for a randomly triggered progressive jackpot that can hit on any spin regardless of bet size. The two games solve for genuinely different things: Book of Ra concentrates its return potential into occasional, symbol-driven free spins bursts, while Cleopatra's Gold spreads smaller, more frequent wins across the base game with the jackpot sitting as a separate, unpredictable layer on top. Book of Dead from Play'n GO is also frequently raised in the same conversation — it borrows Book of Ra's expanding-symbol format almost directly, runs at a cleaner, more consistently published 96.21% RTP, and has modern visuals where Book of Ra shows its 2005 age. Which of the three fits depends on whether you're chasing the classic expanding-symbol mechanic, a random jackpot shot, or simply the best available return.
Within Ozwin's lobby, Cleopatra's Gold runs a 5-reel, 3-row grid with 20 adjustable paylines, a wild Cleopatra symbol that doubles wins, and 15 free spins with a 3x multiplier triggered by three or more Pyramid scatters — full details are covered on its own page if you want to weigh it directly against what's on this one.
Author's tip from Connor Blake, Independent iGaming Reviewer & Player Safety Analyst: "If you specifically want the expanding-symbol mechanic Book of Ra is known for, Book of Dead is the closer modern match. If you'd rather trade that mechanic for a randomly triggered jackpot shot on every spin, Cleopatra's Gold in Ozwin's RTG library is worth a look instead. Neither is objectively better — they're solving different problems."
Volatility also shapes what a "typical" session looks like in a way that's easy to underestimate on paper. A high-volatility title like Book of Ra can run 100, 150, even 200 base-game spins without triggering the free spins round at all — that's not a malfunction, it's simply how the maths of a low-frequency, high-payout bonus is designed to work. Players budgeting for a Book of Ra session should size their bankroll around the assumption that free spins might not trigger in a given sitting, rather than treating the bonus round as a near-certain event within any fixed number of spins.
Responsible play
High-volatility slots like Book of Ra are built around long dry spells punctuated by occasional large wins — that's the design, not a malfunction. Set a session budget that assumes the free spins round might not trigger at all, and treat any hit as a bonus rather than an expectation. Players must be 18 or over. If gambling has stopped feeling like entertainment, Gambling Help Online is available 24/7 at 1800 858 858.
For pokies confirmed in Ozwin's own library, browse the full Ozwin homepage, or check titles like Gates of Olympus and Sweet Bonanza for a different take on high-volatility mechanics. If you're already registered, the login page gets you back in quickly. New to terms like RTP, volatility, or expanding symbol? The glossary covers all of them in plain language.
