Game ThemeBook |
ProviderGreentube |
VolatilityHigh |
RTP95.28% |
Max Multiplier10'036x |
Min Bet0.02 CHF |
Max Bet30.00 CHF |
Lost temple in the heart of a lush jungle, gold glinting on the stone, and a heroine ready to explore every corridor of a pre-Columbian sanctuary. This chapter transposes the saga to the mythical El Dorado and entrusts exploration to an archaeologist instead of the historic explorer. The setting changes, but the emblematic structure remains: 5x3 grid with up to 10 adjustable paylines, a game engine based on a sacred book with a dual function, and a bonus phase built around expanding special symbols.
The mechanical core revolves around the central symbol of the game, an ancient book that combines two roles: Wild and Scatter. This cornerstone substitutes all symbols (except the expanding special symbol during the function) and triggers 10 free spins when 3 or more books appear on the screen. The standout feature lies in the preparation of this bonus: 3, 4, or 5 books award 1, 2, or 3 expanding special symbols for the free spins session. Once selected, these symbols transform into golden columns, stretching vertically to cover all 3 reel positions where they land and pay in any position, meaning independent of the classic line alignment.
This system, a signature of the series, receives here a “multi-level” variant: the allocation of up to 3 special symbols disrupts the balance of the free spins. The variety of selected icons modifies the expansion frequency and screen coverage, giving the bonus a different prominence from one session to another. Note that the feature can retrigger by landing at least 3 books again during free spins, extending the experience under the same bet as the triggering spin.
Under the surface, the paytable leaves no ambiguity: the illustrated “premium” symbols can pay from 2 copies, while the “minor” symbols (card figures) require 3 occurrences on adjacent reels. The hierarchy is clear: the archaeologist tops the chart, supported by several stylized gold artifacts. Framing it all, a theoretical ceiling is specified: a maximum potential of up to 5,000x the bet, in the purest tradition of this game family.
The setting leaves behind dunes and pyramids for a South American aesthetic. The background depicts the entrance of a pre-Columbian temple carved in stone, where sculpted rock blends with vines and lush vegetation. Golden hues dominate, creating a warm contrast with the deep green of the jungle. The grid stands at the center of a monumental porch, as if each spin slides ancient slabs.
The visual style is more modern and detailed than in earlier titles, while maintaining the geometric simplicity cherished by the series. Animations prioritize readability and highlight the “totem” effect of expansions: the icon chosen for the feature spreads over three positions, like a pillar lighting up in the sanctuary’s darkness. The overall feel is a revisited classicism: sharp silhouettes, sparsely saturated palettes, and light striking reliefs like a beam filtering through the canopy.
At the center of the scene, the archaeologist replaces the traditional explorer and sets the tone for this geographic shift. Helmet, tools, and determined posture evoke methodical exploration of the ruins; the symbolism is clear, with the expedition aiming for El Dorado’s treasure chamber. The result creates a coherent visual universe, readable on 5 reels and 3 rows, where each icon fits the Mesoamerican imagination.
Note a structural feature: the set is enriched compared to classic series entries, with more icons overall and a payout distribution built around 2+ for premiums and 3+ for minors.
The soundtrack leaves behind the “mystical” tones of the old era for a more rhythmic orchestration, punctuated with exotic accents matching the South American jungle. The result remains suggestive and subtly accompanies the action without overwhelming it. The spinning and locking sounds of expanding symbols add a sharp, crisp counterpoint, like the click of ancient mechanisms. When the book opens to reveal the expanding special symbol, a sound highlight reinforces the key moment, like a measured “firework” emphasizing the transition to the feature.
The game focuses on a clear triptych: a central dual-role symbol (Wild/Scatter), a free spins session, and special expanding symbols able to pay in any position. Surrounding this core are structural elements — 5x3 grid, 10 adjustable paylines — and a Gamble option that extends the series’ classic DNA.
The Book of Ra simultaneously functions as Wild and Scatter. As a Wild, it replaces all symbols to complete combinations, except the special expanding symbol when active during free spins. As a Scatter, it triggers the free spins feature with 3, 4, or 5 books in view. This dual nature concentrates the game’s dynamics around a single totem object, simplifying screen readability while multiplying entry points to the bonus feature.
3 or more books award 10 free spins. The originality lies in the pre-allocation: 3 books grant 1 special expanding symbol, 4 books grant 2, and 5 books grant 3. This phase is played with the bet in effect at trigger and can be retriggered by landing more books during the feature. The pre-selection of special symbols determines the bonus layout: the more symbols allocated, the greater the opportunities for vertical expansion on the reels.
Before the free spins start, special expanding symbols are randomly selected. During the feature, each occurrence of a special symbol grows to cover all 3 positions of the reel it lands on. Key detail: these symbols “pay anywhere”, independent of paylines, meaning they count as Scatters for win evaluation. The trigger condition varies by symbol tier: 2 symbols suffice for premiums, while 3 are needed for lower-value symbols. This hybrid behavior — vertical expansion + anywhere pays — is the game’s most distinctive technical feature.
The engine uses a 5x3 grid and up to 10 paylines. Classic combinations are evaluated left to right on these lines, while expansions of special symbols during free spins introduce a second counting mode, “anywhere pays.” This dual reading mode — paylines in the base game and anywhere pays for bonus expansions — structures the progression between base game and free spins.
After a win evaluation, a Gamble option is available: a face-down card draw offers a choice of red or black. Correct choice doubles the amount staked in this Gamble; a wrong choice loses it. Depending on the operating environment, the feature may be disabled.
| Function | Trigger | Effect | Technical Details |
|---|---|---|---|
| book of ra — Wild | Always present | Substitution |
|
| BOOK OF RA — Scatter | 3, 4, or 5 books in view | 10 free spins |
|
| Special Expanding Symbols | Random selection before free spins | Vertical extension + anywhere pays |
|
| Grid and Paylines | Base game | Payline evaluation |
|
| Gamble | After win evaluation | Potential double |
|
This installment transposes the “book + expansions” concept into an El Dorado jungle, featuring an archaeologist as the main character. The core promise is kept: remaining faithful to the 5x3 grid with 10 paylines, while adding a significant variation to the bonus via allocation of 1 to 3 expanding symbols. The game structure is clearer and more flexible: on one side, a single book concentrates the triggers (Wild/Scatter and entry to free spins); on the other, the bonus outcome varies considerably depending on the number and type of special symbols randomly selected.
This “multi-expansion” choice clearly differentiates this episode from many “book” titles that limit themselves to a single extended symbol. In practice, the screen can host simultaneous expansions on multiple reels, with a Scatter behavior that neutralizes the payline constraint during the feature. The base game remains strictly linear with combinations on up to 10 paylines, and a paytable that rewards premiums from 2 occurrences, such as the archaeologist topping the hierarchy.
Compared to other “books” with expanding symbols, this version aligns with solid common points while finely adjusting the bonus phase. Similar mechanics can be found in titles such as Magic Mirror Deluxe 2 or Book of Oz — expansions triggered during free spins and anywhere pays for extended symbols — but the allocation of up to 3 special symbols marks a differentiator. The resulting effect is a potentially more densely covered grid, enhancing the visual signature of the free spins and altering the win evaluation tempo during this phase.
Within the “Book of” universe, Book of Gold: Double Chance by Playson also focuses on extended symbols, but with a “double chance” structure directing the bonus differently. In another thematic vein, Age of the Gods by Playtech chooses Greek mythology and multiplies bonus sub-functions, opting for a broader diversity of features less focused on a single expansion mechanic. By comparison, this title favors structured simplicity: a single trigger (the book), a readable 5x3 grid, and a clear intensity increase once the special symbols are drawn.
Visually, the shift to South America brings a welcome contrast: golden palette, Aztec-Maya temple, and a heroine embodying this geographic move. The more rhythmic soundtrack enhances the spins and highlights key moments, notably the opening of the book and the deployment of extended symbols. Finally, a numerical benchmark frames the horizon: potential up to 5,000x the bet, consistent with the tradition of this series.
In summary, this chapter revisits the “book + expansions” formula and adds a decisive technical nuance: allocation of 1 to 3 special symbols during the 10 free spins. The result preserves readability and the series’ mechanical identity while adding extra depth to the bonus phase. For those interested in totem-symbol-based architectures, 5x3 grids with 10 paylines, and vertical expansions paid anywhere, this title represents a clear milestone in the “book” typology set in a finely executed pre-Columbian setting.
| 2 x1.00 3 x10.00 | 4 x100.00 5 x500.00 | |
|---|---|---|---|
| 3 x2.00 | 4 x20.00 | 5 x200.00 |
| 2 x0.50 3 x4.00 | 4 x40.00 5 x200.00 | |
| 2 x0.50 3 x3.00 | 4 x10.00 5 x75.00 | |
| 2 x0.50 3 x3.00 | 4 x10.00 5 x75.00 | |
| 3 x0.50 | 4 x4.00 | 5 x15.00 |
| 3 x0.50 | 4 x2.50 | 5 x10.00 |
| Wild, Scatter |
Quel est le rĂ´le du livre dans le jeu ?
Il cumule Wild et Scatter: il substitue (sauf au symbole spécial en bonus) et déclenche les free spins avec 3+ en vue. Il peut aussi payer comme symbole à part entière.
Comment se déroulent les free spins ?
Des symboles spéciaux sont tirés au sort avant le début; ils s’étendent verticalement et paient en toute position. La fonction peut se relancer avec 3+ livres, sur la même mise.
Qu’est-ce qui différencie cette version des autres « book » ?
Plusieurs symboles d’expansion peuvent être alloués, augmentant la fréquence d’extensions et la couverture de l’écran, pour un bonus plus varié d’une session à l’autre.
Comment sont calculés les gains en base game et en bonus ?
En base game, lecture sur des lignes de gauche Ă droite. En free spins, les symboles Ă©tendus paient hors lignes, en position libre.
Y a-t-il une option Gamble ?
Oui, après un gain, un choix rouge/noir peut doubler la somme ou la perdre. Sa disponibilité dépend de l’environnement d’exploitation.
OL-AGG-20191217-004
