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Book of Books guide
Book of Books Overview
Book of Books is a high-volatility Peter & Sons video slot released on 16 March 2023. It begins on a 5×3 grid with ten paylines, then uses Book Scatters to build a future free-spins round. Two Books can store a Powerup; three to five trigger seven spins plus everything already collected, with the bonus grid able to grow as large as 5×5 and 40 lines.
This is not a conventional single-expander clone. Its base game can bank extra spins, additional expanding symbols and expanding-win multipliers, while the Golden Bet and Bonus Buy add optional routes where permitted. The official provider page currently shows 96.05% RTP; many catalogues round that to 96.1%, a small but worth-explaining discrepancy.
Book of Books is an adult gambling product. Demo credits cannot be withdrawn, and a purchased or naturally triggered feature can return less than its cost. High volatility, collection progress and larger bonus grids do not create a reliable winning strategy.
| Category | Editorial overview |
|---|---|
| Developer | Peter & Sons |
| Publishing context | Released through the studio’s Yggdrasil relationship |
| Release date | 16 March 2023 |
| Theme | Medieval Order of the Peregrin guarding a legendary book |
| Base layout | 5 reels × 3 rows; 10 paylines |
| Bonus layouts | Up to 5×4/20 lines and 5×5/40 lines |
| Starting free spins | 7 plus collected Powerups |
| Base collection | 2 Scatters award one stored Powerup |
| Powerups | +1 or +2 spins, extra expanding symbol, or ×1/×2 expanding multiplier |
| Official RTP | 96.05% on the current provider page |
| Volatility and maximum | High; 10,000× maximum |
| Optional features | Golden Bet and Buy Bonus where available |
The design connects its stages. Two-Scatter outcomes that would be pure near misses in many book slots have a defined collection function here. The accumulated items then enter the next bonus, after which the collection resets according to current market rules.
- Book of Books Overview
- Verified Data and Source Status
- Theme, Graphics and Design
- Rules and Win Structure
- Base-Game Powerup Collection
- Free Spins and Expanding Symbols
- Wild and Book Scatter
- Golden Bet Bonus Choice
- Bonus Buy, Optional Tools and Licence Restrictions
- Payouts and Bet Examples
- Mobile Play and Controls
- RTP, Volatility and Maximum-Win Analysis
- Pros and Limitations
- How to Play Responsibly
- Editorial Verdict
- Frequently Asked Questions
Book of Books guide
Verified Data and Source Status
| Data point | Current Peter & Sons page | Current market records | Editorial treatment |
|---|---|---|---|
| Release | 16 March 2023 | Some list an earlier 6 March date and 16 March wide release | Use provider date |
| RTP | 96.05% | Usually displayed as 96.1% | Lead with exact provider value; explain rounding/configuration |
| Layout | Dynamic 5×3 to 5×5; up to 40 bonus lines | Base 10, then 20/40 lines are consistently described | Explain each game state |
| Trigger | 3–5 Scatters; 7 spins plus stored Powerups | Consistent | Treated as established |
| Bet range | No universal range displayed | 0.10–50 often reported | Configuration example only |
| Bonus Buy | Confirmed, no public universal price | Specific purchase prices appear in reviews | Omit fixed prices; check live menu |
| Hit frequency | Not displayed | 33.26% often repeated | Not published as verified here |
The official page is unusually detailed about mechanics, including the collection pool, non-adjacent expanding awards and Golden Bet. It is less specific about base stake limits, purchase prices and alternate RTP builds. Those fields belong to the loaded help file rather than a copied global specification.
Monthly operator payout reports that list the title show that it remains in active catalogues, but realised monthly return is not theoretical RTP. A short period can finish above or below 100%; it must not replace the published game model.
Book of Books guide
Theme, Graphics and Design
The fictional Order of the Peregrin hides its guardians among travelling musicians and minstrels. Rather than another Egyptian tomb, Book of Books uses a grey, gold and parchment medieval world, with cloaked figures, instruments and a locked volume at the centre of the mystery. The tone is eccentric and slightly theatrical rather than solemn.
The base grid is compact enough for the characters and card-style lower symbols to remain readable. During free spins the panel physically gains rows when the stronger trigger or retrigger conditions are met, so the presentation communicates a genuine rules change rather than merely enlarging the artwork.
Book of Books guide
Rules and Win Structure
The base game starts with five reels, three rows and ten paylines. Regular line results follow the active paytable, while the Book is counted as a Scatter and the dedicated Wild can substitute where permitted. Several qualifying awards on one spin are added according to the game’s evaluation order.
Landing two Book Scatters awards a randomly selected Powerup to the collection meter. Three to five Books trigger free spins instead. The starting panel grows with the trigger strength in the commonly documented structure: three Books retain 5×3/10 lines, four open 5×4/20 lines and five open 5×5/40 lines.
The larger panel affects ordinary line evaluation. Expanded-symbol awards are calculated after regular wins; confirm their exact line basis in the loaded help page.
Book of Books guide
Base-Game Powerup Collection
Two Scatters create a useful state change without starting the bonus. The game selects one Powerup: one or two extra free spins, one extra expanding symbol, or an expanding-symbol multiplier of ×1 or ×2. The item is stored and becomes active when free spins eventually begin.
More than one two-Scatter result can build the meter before a trigger. Peter & Sons says the feature can be powered with up to ten expanding symbols. Multipliers and additional spins can also accumulate under the game’s rules, giving the player a visible record of what the next feature would include.
This mechanism does not make the trigger due. Stored items describe the value state if three or more Books later land; they do not alter a completed spin retroactively or guarantee that the bonus occurs before the session ends. When the feature closes, the banked state should be expected to reset unless the active help explicitly says otherwise.
Book of Books guide
Free Spins and Expanding Symbols
Three to five Scatters award seven free spins plus every Powerup in the meter. Depending on the trigger, the grid can begin at 5×3, 5×4 or 5×5. The extra rows lift the ordinary payline count from ten to twenty or forty in the documented layouts.
During each free spin, the game identifies the regular symbols eligible to expand. Ordinary line wins are settled first. If enough copies of an eligible symbol are present, they fill the relevant reels and an additional prize is evaluated. These expanded copies can pay from non-adjacent reels, and Wilds cannot stand in for missing copies in that dedicated calculation.
Two or more Scatters can retrigger the feature. Depending on the number landed, the award can include extra spins, another Powerup and panel enlargement. The provider confirms all three possibilities but does not publish every award tier in its public summary; the active help file should be used for the exact retrigger table.
Book of Books guide
Wild and Book Scatter
The Wild supports ordinary line combinations by substituting for eligible regular symbols. It cannot substitute for the special expanding symbols when their additional non-adjacent prize is calculated. That exclusion matters: a Wild-assisted line win may be valid even though the same positions do not qualify for an expanded-symbol award.
The Book Scatter controls collection, entry and retriggers. Two in the base game award a Powerup; three to five enter free spins. Two or more during the feature can add value or resize the grid under the applicable tier. Scatter counting does not require the Books to follow a normal line.
The Wild and Book are therefore complementary rather than interchangeable. Calling the Book a standard Wild/Scatter would erase one of the design’s clearer distinctions.
Book of Books guide
Golden Bet Bonus Choice
Golden Bet raises the cost of a base-game spin to 1.5× the normal selected bet and increases the chance of triggering the bonus according to Peter & Sons. If the ordinary total is 1.00, Golden Bet makes that game cycle cost 1.50. It does not mean the player receives 1.5× every prize or that free spins are guaranteed.
The feature should be treated as a separate budget decision. A player planning 100 normal 1.00 spins has 100 units of exposure; 100 Golden Bet spins at the same displayed base amount cost 150. Comparing only the number of spins hides the additional 50 units wagered.
The provider page does not publish the precise change in trigger probability or a separate Golden Bet RTP. Without those figures, it is not possible to claim that the option offers better value. Its verified benefit is narrower: a higher feature chance in exchange for a higher stake.
Book of Books guide
Payouts and Bet Examples
The public provider page does not expose a complete symbol paytable, so a feature-state comparison is more reliable than fabricated character multipliers.
| Game state or choice | Stake / grid treatment | Verified effect |
|---|---|---|
| Normal base spin | Selected total bet; 5×3 and 10 lines | Two Scatters can store one Powerup |
| Golden Bet spin | 1.5× normal stake | Provider states an increased chance to trigger free spins |
| 3-Scatter trigger | Base stake; 5×3/10-line start in current records | 7 spins plus stored Powerups |
| 4-Scatter trigger | Base stake; 5×4/20-line start in current records | 7 spins plus stored Powerups |
| 5-Scatter trigger | Base stake; 5×5/40-line start in current records | 7 spins plus stored Powerups |
| Expanded-symbol evaluation | After ordinary line wins | Eligible symbols fill reels and can pay non-adjacently |
| Headline maximum | 10,000× | Active cash cap and stake basis still apply |
At a 0.20 total stake, a 25× award equals 5.00 in the same currency; at 1.00 it equals 25.00. Golden Bet changes the cost side as well: the 1.00 selection becomes 1.50 before the result. These are arithmetic examples, not expected outcomes.
Market catalogues often report a 0.10–50 range, but the provider page does not define it globally. Currency, operator settings and law can narrow the choices. Read the total shown beside Spin rather than deriving it from an unrelated casino screenshot.
Book of Books guide
Mobile Play and Controls
The provider lists HTML5 support for iOS, Android, Windows and macOS. The 5×3 base grid fits portrait screens, while a 5×5 feature needs slightly smaller symbols or more vertical space. The changing panel should not hide balance, total bet or the count of remaining spins.
On mobile, open the menu to find rules, RTP, paytable, sound and permitted speed settings. Check whether Golden Bet is active before every wager; a highlighted toggle can increase cost by 50%. The collection meter should also show which items are banked, although its exact placement may change with orientation.
Book of Books guide
RTP, Volatility and Maximum-Win Analysis
Why 96.05% Is Often Shown as 96.1%
Peter & Sons currently publishes 96.05%. Many databases display 96.1%, which can be ordinary rounding to one decimal place; it may also reflect the way a particular integration records the model. Without a version sheet linking both values, the exact provider figure should lead and the rounded market value should remain labelled.
RTP is calculated across a very large statistical sample. At 96.05%, the theoretical house edge is 3.95%, but an individual session can finish far above or below that ratio. Stored Powerups do not act as cashback, and a Bonus Buy does not compel the game to return its purchase price.
What High Volatility Means Here
The provider labels Book of Books high volatility. The feature concentrates potential into expanding symbols, multipliers, larger grids and retriggers, so ordinary play can feel subdued beside a strongly powered bonus. A meter with several collected items can also make stopping psychologically difficult even though the feature may not arrive within the budget.
No hit rate or trigger frequency is published on the checked official page. The often-repeated 33.26% figure is therefore not used as a verified promise, and the article does not estimate how many spins are needed to reach the bonus.
How to Interpret the 10,000× Cap
The official maximum is 10,000×. At a 0.20 stake, that multiplier would equal 2,000 units; at 1.00, it would equal 10,000 units, before any operator cash cap. The calculation shows scale only and does not disclose probability.
The cap is not a progressive jackpot and does not grow because other players lose. Increasing stake raises both cash exposure and the cash value of the same multiplier. It does not make the 10,000× outcome easier to reach.
Book of Books guide
Pros and Limitations
Pros
- distinctive medieval-musician theme instead of another Egyptian book setting
- two Scatters have a defined collection function
- Powerups connect the base game with the next free-spin round
- bonus grid can expand from 5×3 to 5×5
- non-adjacent expanding-symbol awards support up to ten eligible symbols
- official provider page documents the core mechanics in useful detail
- 10,000× headline maximum and multi-platform HTML5 support
Limitations
- high volatility can make returns sharply uneven
- Golden Bet increases every selected wager by 50%
- Bonus Buy can spend a large part of a budget at once
- precise purchase prices and universal stake limits are not provider-published
- 96.05% and 96.1% are presented inconsistently across sources
- larger-grid line logic needs the live help screen for full evaluation detail
- hit and trigger frequencies are not verified by the checked official page
18+
Responsible play
How to Play Responsibly
Set a loss limit and time limit before starting. Treat the entire amount as entertainment money that can be lost, and never use funds needed for housing, food, bills, debt or savings commitments. Confirm the total bet after every change, particularly when Golden Bet is highlighted.
Do not continue only because Powerups are stored. A collection meter can create a sense of unfinished business, but it does not guarantee that a trigger will occur before funds run out. Include any Bonus Buy in the same session limit rather than viewing it as separate money. Avoid increasing stakes after losses or using repeated purchases to chase a stronger grid.
Use deposit limits, reminders, time-outs and self-exclusion. Stop if play causes harm, and seek independent support.
Book of Books guide
Editorial Verdict
Book of Books earns its title by treating the bonus as something assembled in advance. Two Scatters can add a meaningful Powerup, and a stronger trigger can enlarge both the grid and line structure. The result is a coherent base-to-bonus loop, while the medieval minstrels give Peter & Sons’ art a recognisable identity.
Its optional modes require restraint. Golden Bet makes every selected spin 50% more expensive, and Bonus Buy turns feature access into a concentrated wager. The official 96.05% should also be distinguished from rounded 96.1% listings. For readers comfortable with high volatility and visible collection mechanics, it is a thoughtful variation; it remains random gambling, not a meter that can be timed for profit.
Book of Books guide
Frequently Asked Questions
Who made Book of Books and when was it released?
Peter & Sons developed the game, with Yggdrasil publishing context documented around its launch. The provider gives 16 March 2023 as the release date.
What is the RTP?
The current official product page states 96.05%. Many catalogues display 96.1%, which is consistent with one-decimal rounding but should not replace the exact provider figure. Verify the loaded game for any alternate configuration.
How many reels and paylines are there?
The base game uses five reels, three rows and ten paylines. Free spins can expand to 5×4 with twenty lines or 5×5 with forty lines under the stronger trigger and retrigger states.
What happens when two Scatters land?
Two Books in the base game store a random Powerup: one or two extra spins, another expanding symbol, or a ×1/×2 expanding-symbol multiplier. The item waits for the next triggered feature.
How are free spins triggered?
Three to five Scatters award seven free spins plus collected Powerups. More triggering Scatters can start a larger grid. The feature can be retriggered by two or more Scatters under its bonus rules.
How do expanding symbols pay?
Ordinary line wins are calculated first. Eligible symbols can then fill their reels and receive a separate award without needing adjacent placement. Wilds cannot substitute for missing expanding symbols in that calculation.
What does Golden Bet cost?
It costs 1.5× the normal selected wager and increases the feature-trigger chance according to the provider. The exact probability change is not publicly stated, so it should not be marketed as better-value play.
Can the free spins be bought?
A Buy Bonus is available in permitted builds. The provider’s public page does not give one universal price, and regulation can remove the option. A purchase does not guarantee a return above its cost.
What is the maximum win?
Peter & Sons lists 10,000×. Its cash value depends on total stake and any operator payout cap. The figure is a theoretical ceiling, not an expected or frequent result.
Book of Books guide
Player Reviews
No verified testimonials, authenticated screenshots or complete session records were provided for this page. Future comments must be labelled as user opinion, moderated for personal and financial details, and separated from the sourced specifications. A report of many stored Powerups, a fast trigger or a large win cannot establish feature frequency or likely return for someone else.
Moderation should remove account data, promotional links, guaranteed-win claims and unsupported allegations. Useful feedback can cover mobile readability, whether Golden Bet clearly displayed its 1.5× cost, the grid used for a trigger and the RTP shown in the help panel. Any site rating should disclose its criteria and must not imply that a higher score predicts a payout.
The eight entries below are editorial examples for this static layout. Replace them with genuine, verified reader reviews before publication.
Jamie R.Manchester
The core Book of Books feature is explained without turning it into a winning strategy.
Chloe W.Cardiff
The Book of Books RTP variants and maximum-win caveats are easy to find.
Nathan C.London
A detailed Book of Books guide that treats RTP as a long-run statistic, not a promise.
Mia L.Birmingham
The Book of Books bonus walkthrough is clear on mobile.
Aaron P.Bristol
Useful Book of Books tables and visible responsible-play information.
Sophie T.Leeds
Provider facts for Book of Books are separated from operator-specific settings.
Daniel K.Glasgow
The comparison of Book of Books base play and its feature answered my main question.
Ethan S.Edinburgh
Clean Book of Books page design, readable tables and a helpful FAQ.