Play Book of Secrets Slot

Book of Secrets is a “Book of” slot developed by SYNOT. It’s nothing new under the sun – but you can win up to 6,227x your bet in one go!

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User Rating: 4.5/10 (2 votes)

RTP 🔗: 96.05% RTP Ranges!
Variance: High
Max Win: x6227.00
Betways: 10
Release Date: 2018-02-01
SlotRank: N/A
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Online Casinos where you can play Book of Secrets

We have scanned 12 casinos in US New Jersey, and we have not found Book of Secrets on any of them at the current moment. Do not hesitate to check our top casinos in US New Jersey:

Book of Secrets Review

SYNOT are the main Czech studio on the market these days, and they are constantly reinforcing their position by launching interesting online slots that can often compete even with mainstream games. The Book of Secrets slot, which we’ll be taking a closer look at in this online slot review, is the studio’s attempt at producing a “Book of” game, and there’s no doubt that it’s achieved a solid standard with it. Let’s not get ahead of ourselves, however. The playing field of Book of Secrets is simple, and it features 5 reels, 3 rows and 10 paylines.

Thematically, Book of Secrets is your traditional Egyptian game, and its production values are only average overall. We do like how colorful things are here and there, but it’s all rather straightforward, and there are no big effects to be found anywhere. Crucially, it’s all stuff we’ve seen before, which makes it impossible for us to be excited.

Book of Secrets
Book of Secrets Slot – Reels Screen

Let’s now take a look at the slot’s mathematical model. It combines a high volatility level with a very juicy 6,227x jackpot, while the hit game’s hit frequency clocks in at 28.97%. Players can then jump in for bets between £0.20 and £100 per spin, which should please just about everyone. And the slot’s theoretical RTP? Well, it’s always between 85.15% and 97.94%, with the default value standing at 96.05%.

Book of Secrets Slot Features

The paytable of the Book of Secrets slot offers 9 pay symbols, and it’s possible to divide them into 5 low pays and 4 high pays. For low pays, there are card ranks from Tens to Aces, and those pay up to 15x your bet for a full five-of-a-kind combination. For high pays, you can look forward to ankhs, scarabs, gold masks, and daring female adventurers. Notably, all high pays pay out even in sets of just two, and the top-paying female adventurer symbols are worth 500x your bet for a full set.

As is the standard for “Book of” slots, there’s only one special symbol in Book of Secrets. We’re talking, of course, about the game’s Book symbols, which work as both Wilds and Scatters.

Book of Secrets Free Spins
Book of Secrets Slot – Free Spins Feature

Landing 3+ Book symbols triggers the Free Spins feature with 10 free spins, and retriggers are possible as well. Most importantly, though, the game will pick one of the pay symbols at random at the start of the feature, and all instances of that symbol will work as special symbols during free spins. That means that they can not only expand to cover an entire reel, but also pay out when not adjacent on a payline.

You can then also try to boost your wins with the Gamble feature, which is all about trying to guess the color of a hidden playing card. If you guess right, your potential win will double. If you guess wrong, you’ll lose the risked stake. Here and there, you can get lucky and hit a Joker card, which will double your potential payout regardless of your guess.

Review Summary

When you put everything together, it should be clear that Book of Secrets is a straightforward “Book of” slot that follows the basic formula without adding anything new to it. That makes things rather unexciting on the whole, as there are now many more complex “Book of” slots out there, but one shouldn’t be too critical, as the fundamentals are all there, and the slot is without any issues as such.


  • Traditional “Book of” slot
  • Delivers in terms of fundamentals


  • Nothing new under the sun


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Video and Image gallery

Book of Secrets. Book of Secrets slot
Book of Secrets
Game Screen. Book of Secrets slot
Game Screen
Win Screen. Book of Secrets slot
Win Screen
Win Screen 2. Book of Secrets slot
Win Screen 2
Double Up Risk Game Screen. Book of Secrets slot
Double Up Risk Game Screen
Free Spins Win Screen. Book of Secrets slot
Free Spins Win Screen
Free Spins Win Screen 2. Book of Secrets slot
Free Spins Win Screen 2
Free Spins Win Screen 3. Book of Secrets slot
Free Spins Win Screen 3
Free Spins Gameplay Screen. Book of Secrets slot
Free Spins Gameplay Screen

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Book of Secrets Slot FAQs

What is the RTP of the Book of Secrets slot?

The slot’s theoretical RTP is always between 85.15% and 97.94%, with the default value clocking in at 96.05%.

How volatile is Book of Secrets?

The game’s volatility is high, and its hit frequency clocks in at 28.97%.

What is the biggest win possible in the Book of Secrets slot?

The jackpot of Book of Secrets is 6,227x your bet.

How many winning ways are available in Book of Secrets?

There are 5 reels, 3 rows and 10 paylines.

Are there any free spins in Book of Secrets?

Yes, you can get 10 free spins with special symbols by landing 3 or more Book symbols. Retriggers are possible, and special symbols can both expand to cover an entire reel and pay out even when not fully adjacent on a payline.

Are there any other gameplay features in Book of Secrets?

You can always try to boost your wins with the Gamble feature, but that’s about it.

Is Book of Secrets available as a mobile slot?

Yes, you can enjoy Book of Secrets on all kinds of modern mobile devices.

Can I play Book of Secrets for free?

Yes, of course! You can always check out the slot’s free demo, which is available even right here at SlotCatalog - Play Book of Secrets for Free!

Book of Secrets
has RTP ranges!

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Scanned Countries

US New Jersey

Sorry, Book of Secrets is not available for this market. In total, we scanned casinos at 56 in various markets. Book of Secrets is available in 44 countries. The markets with the highest number of casinos are: GB, NO, NZ, DE

Country Scanned [i] With Game [i] In Lobby [i] SlotRank [i] Action
United Kingdom GB 559 158 1 3728 See Data
Norway NO 418 98 2 968 See Data
New Zealand NZ 460 82 3 493 See Data
Germany DE 349 81 1 125 See Data

Show All Countries (44)

Book of Secrets Attributes

Provider: SYNOT
Release Date: 2018-02-01
Type: Video Slots
RTP: 96.05% RTP Ranges!
Variance: High
Hit Frequency: 28.97
Max Win: x6227.00
Min bet $, €, £: 0.1
Max bet $, €, £: 20
Layout: 5-3
Betways: 10
Features: Book of ... mechanic, Expanding Symbols, Feature: Substitution Symbols, FreeSpins, Gamble, Risk/Gamble (Double) game, RTP range, Scatter symbols, Wild
Theme: Ancient civilizations
Objects: Book, Mask, Pyramid
Genre: Adventure
Other tags: Brown, Sand color, Egypt, Scarab
Technology: JS,HTML5
Game Size: 18.5 MB
Last Update: 2023-01-13

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