Game ThemeBook |
ProviderYggdrasil |
VolatilityVery high |
RTP94% |
Max Multiplier |
Min Bet0.20 CHF |
Max Bet25.00 CHF |
Book Extreme is built around an ancient-Egypt book slot with pharaoh imagery and sacred tomes. The game is supplied by Yggdrasil, and its rules centre on the title-specific mechanics described below. Within an swiss online casino slot catalogue, Book Extreme is defined by its own reel structure, symbol hierarchy and feature sequence rather than by a generic bonus format. Game layout: 5 reels and 3 rows. Win system: 10 fixed paylines.
The core round in Book Extreme is organised around Book symbols that combine Wild substitution with a feature trigger and an expanding selected bonus symbol. These mechanics determine how symbols remain, change, expand, split, cascade or apply multipliers from one evaluated result to the next.
The regular symbol set is arranged in distinct value groups. The regular paytable uses Egyptian premium imagery, with pharaoh and sacred-object designs occupying the upper symbol tiers. Simpler Egyptian and card-style symbols occupy the lower regular tiers. Special symbols are used to start or modify the title’s feature sequence when the relevant conditions are met. The Book symbol acts as a Wild in the base game and is also the key Scatter-style symbol for the Book Game feature.
The main enhanced-play structure is the Book Game, where three or more Book symbols start a wheel-led feature that selects an expanding bonus symbol for the Free Spins sequence, with further Books able to retrigger the feature. Its outcome is expressed through additional spins, Wild behaviour, symbol changes, multipliers, collections or other game-specific modifiers, depending on the feature that is active.
The game presents a compact Egyptian tomb setting with gold, stone and hieroglyphic details. The book symbol is visually dominant because it acts as the principal special symbol and is also tied directly to the expanding-symbol bonus sequence.
The interface keeps the 5 reels and 3 rows structure readable while the 10 fixed paylines determines how combinations are evaluated. Feature states are presented directly around or on the reels so that changes to symbols, multipliers and special positions remain visible during the round.
Feature changes are communicated directly on the grid through symbol movement, Wild placement, reel changes, counters or dedicated bonus transitions, depending on the active mechanic.
Book Extreme builds its feature model around Book symbols that combine Wild substitution with a feature trigger and an expanding selected bonus symbol. The table below summarises the main activation conditions and their direct effect on the reels.
| Feature | Activation | Effect | Technical Details |
|---|---|---|---|
| Book Wild | A Book lands in the base game | Substitutes for regular paying symbols | The same symbol also participates in the feature trigger |
| Book Game | Three or more Book symbols | Starts the bonus sequence and a wheel selection | The selected symbol becomes the expanding symbol for the feature |
| Expanding Bonus Symbol | Selected at the start of the Book Game | Expands when the feature rules are met during Free Spins | Further Book symbols can extend the bonus sequence |
Activation: A Book lands in the base game. Substitutes for regular paying symbols. The same symbol also participates in the feature trigger.
Activation: Three or more Book symbols. Starts the bonus sequence and a wheel selection. The selected symbol becomes the expanding symbol for the feature.
Activation: Selected at the start of the Book Game. Expands when the feature rules are met during Free Spins. Further Book symbols can extend the bonus sequence.
Book Extreme combines an ancient-Egypt book slot with pharaoh imagery and sacred tomes with a 5 reels and 3 rows format and 10 fixed paylines. The identity of the game comes from the interaction between the visual theme and the way its main mechanic changes the reel state.
The paytable is visually divided into regular symbol tiers. The regular paytable uses Egyptian premium imagery, with pharaoh and sacred-object designs occupying the upper symbol tiers. Simpler Egyptian and card-style symbols occupy the lower regular tiers. This makes the symbol hierarchy identifiable separately from the Wild, Scatter or feature symbols.
Mechanically, the central element is Book symbols that combine Wild substitution with a feature trigger and an expanding selected bonus symbol. The feature is integrated into the normal reel evaluation rather than being presented as a disconnected side game.
The enhanced-play component is the Book Game, where three or more Book symbols start a wheel-led feature that selects an expanding bonus symbol for the Free Spins sequence, with further Books able to retrigger the feature. Together with the regular symbol structure, this defines how the title changes pace and reel behaviour when special conditions are reached.
What is the reel structure and win system in Book Extreme?
Book Extreme uses 5 reels and 3 rows with 10 fixed paylines.
What is the main mechanic in Book Extreme?
The main mechanic is built around Book symbols that combine Wild substitution with a feature trigger and an expanding selected bonus symbol.
How does the main feature in Book Extreme work?
The main feature is the Book Game, where three or more Book symbols start a wheel-led feature that selects an expanding bonus symbol for the Free Spins sequence, with further Books able to retrigger the feature.
Which symbols are important in Book Extreme?
The regular paytable uses Egyptian premium imagery, with pharaoh and sacred-object designs occupying the upper symbol tiers. Simpler Egyptian and card-style symbols occupy the lower regular tiers.
Who provides Book Extreme?
Book Extreme is a Yggdrasil title.
OL-AGG-20241030-333
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