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There was a before and after Book of Ra. Novomatic introduced this slot to Australian land-based casinos in 2005, and within a decade it had become the most-played slot machine across European gaming halls. When online casinos started licensing Greentube’s digital port, it arrived already carrying two decades of player reputation. Every “Book of” title you have ever seen — Book of Dead, Book of Oz, Book of Shadows, Legacy of Dead, and well over 200 others — traces its DNA directly to this machine. Understanding what made it work means understanding a slot genre that still dominates casino lobbies today.
Classic vs Deluxe — Which Version Are You Playing?
Most casino lobbies list “Book of Ra” without specifying which variant is actually running. The distinction matters because Classic and Deluxe are mechanically different machines that happen to share a name.
Key Specifications
| Parameter | Book of Ra Classic | Book of Ra Deluxe |
|---|---|---|
| Provider | Novomatic / Greentube | |
| Release date | 2005 (land-based), ~2012 (online) | 2008 (land-based), ~2013 (online) |
| Grid | 5×3, 9 paylines | 5×3, 10 paylines |
| RTP (default) | 92–96% (operator-set, varies widely) | 95.10% |
| Volatility | High | High |
| Max win | 5,000× stake | 5,000× stake |
| Wild + Scatter | Book of Ra (dual function) | Book of Ra (dual function) |
| Free spins trigger | 3+ Book symbols anywhere | 3+ Book symbols anywhere |
| Free spins awarded | 10 spins | 10 spins |
| Expanding symbol | 1 random regular symbol | 1 random regular symbol |
| Gamble feature | Colour (2×) or suit (4×) | Colour (2×) or suit (4×) |
| Min/max bet | A$0.10 – A$100 per spin (varies by casino) | |
| Mobile | HTML5, iOS and Android | |
Book of Ra Classic is the 2005 original ported online, featuring 9 paylines. The online RTP for Classic varies significantly by operator because Novomatic deploys it with a configurable range — documented deployments run from 88% to 96%, and you will not know which one you are on without checking the in-game information panel. Book of Ra Deluxe (2008) raised the payline count to 10, introduced a cleaner visual update, and standardised the online RTP at 95.10% across most deployments. The Deluxe version is what the majority of online players in Australia encounter today and what most reviews discuss when they cite Book of Ra mechanics.
The single payline difference sounds trivial but changes base-game hit frequency slightly. More importantly, the Deluxe version’s more consistent RTP deployment means the number you see in the lobby is more likely to reflect what the game actually runs. If you are unsure which version is active at a specific casino, check the game rules screen — Classic typically labels itself “Book of Ra” while Deluxe adds that word to the title.
Base Game: Simple by Design
Five reels, three rows, left-to-right paylines starting from reel 1. The symbol set splits between five card ranks (10 through Ace) that anchor the low end of the pay table and five Egyptian-themed highs: a golden scarab, an ankh, a pharaoh statue, the explorer (the Indiana Jones-style protagonist), and the Book of Ra itself. The explorer is the premium symbol, paying 5,000× stake for five of a kind on a payline — a number that also defines the game’s maximum win.
Two symbols warrant attention. The explorer pays from two of a kind, meaning even a pair on a payline returns something. The Book of Ra serves as both wild and scatter simultaneously: as a wild it substitutes for everything else on paylines; as a scatter it pays regardless of position (three Books anywhere pays 2× stake, four pays 20×, five pays 200×) and triggers the free spins. That dual function is the mechanic Play’n GO replicated in Book of Dead nine years later, and that every subsequent book-format slot has borrowed since.
The base game between features is characteristically high-volatility: long stretches without meaningful returns interrupted by occasional payline hits. The card-rank symbols produce the majority of winning spins but pay amounts that rarely exceed the stake itself. The session’s real destination is always the bonus.
Expanding Symbol Mechanic: The One Feature That Decides Everything
When three or more Book of Ra scatters land anywhere on the reels, the feature triggers. Before the 10 free spins begin, the game opens the book and turns pages to randomly reveal one of the regular symbols as the “special symbol” for the entire bonus round. That symbol can now expand to fill an entire reel whenever it appears — and the expansion does not require payline alignment. If the special symbol lands on reels 2, 4, and 5, all three expand and pay across all active paylines for any combination they form.
Here is why the random draw determines your entire bonus outcome. If the explorer is chosen — the 5,000× symbol — a spin where he appears on three reels and all three expand delivers something in the range of 500–2,000× stake depending on line count and overlap. If the golden scarab is chosen instead — worth a fraction of the explorer at five of a kind — the same three-reel expansion produces an order of magnitude less. Both draws are equally likely. Both produce 10 spins under the same rules. The gap in outcomes is entirely down to which symbol the book opens to.
Retriggers are possible: three or more Books during free spins adds another 10 spins with the same expanding symbol still active. There is no cap. A session where the explorer is drawn and retriggers occur twice or three times is the documented path to the highest recorded wins on this title. A session where the pharaoh statue is drawn and no retrigger lands produces a feature that returns 15–40× stake and ends in under two minutes — unremarkable but statistically common.
The original land-based innovation here is subtle but important: the expanding symbol does not need to be adjacent or on a specific payline. In a standard left-to-right slot, three symbols on reels 1, 3, and 5 with a gap in between do not form a win. In Book of Ra’s free spins, if the special symbol expands on those same three reels, it fills the entire reel and forms combinations across all paylines regardless of which reels are involved. That non-adjacency rule is what makes the feature capable of full-screen coverage — and full-screen coverage at the explorer symbol is how the 5,000× maximum is actually reached.
Gamble Feature
After any base-game win, a gamble button appears. Clicking it shows a face-down card. Guess red or black correctly: win doubles. Guess the suit correctly: win quadruples. Wrong guess: win forfeited entirely. The mathematics are neutral — 50% at 2× and 25% at 4× both return exactly what was wagered in expected value. The feature adds no long-term edge in either direction. Most players who find the feature annoying (it appears after every win, including minor ones) simply close it immediately and collect. Most players who use it do so to inflate small payline hits that would otherwise disappear into the bankroll unnoticed.
Pros and Cons
- The original — historical weight matters. No other slot has directly spawned more imitations across more studios. If you want to understand why book-format slots work the way they do, the only honest starting point is this machine. Sequels and competitors all look different but operate on identical structural logic.
- Non-adjacency expanding rule creates genuine full-screen potential. The premium symbol covering all five reels simultaneously is reachable — not routine, but not purely theoretical either. That single outcome possibility is what sustains player interest through long base-game droughts.
- Explorer pays from two of a kind. In a high-volatility slot where card ranks produce unremarkable small wins, having the premium symbol return something on only two of a kind slightly reduces the frequency of completely dead spins during the base game.
- Franchise depth for players who want to explore further. Book of Ra Deluxe, Book of Ra 6 Deluxe (sixth reel, 15,000× max win), Book of Ra Magic (additional modifier layer), and a dozen themed variants all preserve the expanding symbol core while incrementally raising the ceiling or adding secondary features.
- Classic RTP range is unacceptably wide. A documented deployment range from 88% to 96% on Book of Ra Classic means some players are running a game with nearly 12% house edge without knowing it. The Deluxe version at a standardised 95.10% is more honest, but 95.10% itself sits below what most modern high-volatility alternatives offer at default settings.
- Low-symbol draw makes the bonus a grind. No amount of retriggers rescues a feature where the scarab or pharaoh statue is chosen as the expanding symbol. The mechanic that creates the highest-win potential also creates the conditions for genuinely disappointing bonus outcomes that feel disconnected from the time and bankroll invested to trigger them.
- Production values show their age. The Classic version’s graphics are 2005 land-based quality: static symbols, mechanical animation, minimal audio design beyond a few electronic tones. Deluxe improved this modestly. Neither version competes visually with any title released in the last five years, and the audio design specifically has drawn consistent criticism from reviewers.
- Single bonus feature, unchanged since 2005. No secondary features, no modifier layer, no mid-bonus events. Every session is structurally identical to every other session. The expanding symbol draw is the only variable. For players logging significant time with this title, the repetition is unavoidable.
About Novomatic / Greentube
Novomatic AG is an Austrian gaming technology group founded in 1980 by Johann Graf, headquartered in Gumpoldskirchen. It is one of the largest gambling technology companies in Europe, with operations spanning land-based gaming equipment, casino management systems, and online gaming through its digital subsidiary Greentube.
Greentube is the division responsible for online slot development and distribution. Book of Ra’s online versions — Classic, Deluxe, and subsequent franchise entries — are Greentube products distributed through their own platform and licensed to third-party casinos. Novomatic’s land-based success with Book of Ra in the 2000s, particularly across German-speaking markets and Central Europe, established the company’s commercial standing before the online gaming transition. The franchise has since extended to Book of Ra Deluxe, Book of Ra 6 Deluxe, Book of Ra Magic, Golden Book of Ra, and numerous themed crossovers, maintaining the expanding symbol mechanic as the series’ consistent signature across every version.
FAQ
Because they do. Novomatic and Greentube offer operators a configurable RTP range rather than a single fixed deployment. Book of Ra Classic has the widest documented range — as low as 88% at some deployments, up to 96% at others. Book of Ra Deluxe is more standardised at 95.10% across most online deployments, but even that figure can vary. The only reliable check is opening the game’s information or rules panel before you play, where the active RTP configuration is stated. This is worth 30 seconds of attention every time you encounter a new casino running any Novomatic title — the difference between 88% and 96% house edge is not marginal over any meaningful session length.
For most online players, yes — on two counts. First, Deluxe runs 10 paylines versus the Classic’s 9, which marginally increases base-game hit frequency and gives the expanding symbol one additional payline to contribute to winning combinations during free spins. Second, the Deluxe version’s online RTP is more consistently deployed at 95.10% compared to the Classic’s wide and often undisclosed range. The visual and audio improvements are real but modest. If you are specifically interested in the original land-based experience for historical reasons, Classic is the authentic version. If you are interested in the best available mathematics from the franchise at online casinos, Deluxe is the rational choice between the two base versions — though Book of Ra 6 Deluxe offers a higher ceiling still at 15,000× maximum win.
The mechanics are structurally identical — same 5×3 grid, same 10 paylines (Deluxe), same dual wild/scatter Book symbol, same 10 free spins with one randomly chosen expanding symbol. Play’n GO replicated the formula precisely when building Book of Dead in 2016. The practical differences: Book of Dead runs a higher default RTP (96.21% vs 95.10% for Deluxe), uses Rich Wilde as a branded protagonist with franchise continuity, and was built natively for HTML5 with noticeably sharper graphics. Book of Ra’s advantage is its land-based heritage and the two decades of player familiarity that came with it — many players specifically seek it out because they first encountered it on a physical casino floor. In pure mechanical terms, Book of Dead offers the same feature set at better default value. Book of Ra offers the original experience and the history.