Book of Secrets Extra Slot Review

Book of Secrets Extra Slot Review

If you are ready to embark on archaeological adventures and look for hidden fortunes, you can give Book of Secrets Extra a few spins. This Synot Games slot is inspired by ancient Egypt, with the design of the game including numerous typical Egyptian symbols. The slot has 5 reels and 10 paylines that can be very generous, especially when players land the high-paying icons of Book of Secrets Extra.

The mysterious book that is probably hiding secrets about ancient treasures will act as both a Wild and a Scatter. That means the Book of Secrets itself will unlock many of the special features of the slot. With volatility that ranges between medium and high levels, you may expect fewer payouts, which, however, might turn out to be very generous.

Book of Secrets Extra Slot Summary
Provider Synot Games
Paylines 10
RTP 85.11% – 97.93%
Min Bet 0.1
Max Bet 20
Wild Symbol Book of Secrets
Scatter Symbol Book of Secrets
Bonus Features Free Spins
Jackpot 500x the total stake

Symbols and Winning Combinations of Book of Secrets Extra Slot

Winning CombinationsLike many other slots, Book of Secrets Extra also follows the ancient Egypt theme, with Egyptian hieroglyphs being some of the symbols used in the game. The low-paying icons will grant you a win whenever they are matched three or more times on any of the ten paylines of the slot. Meanwhile, higher-paying symbols can also bring you a payout after they appear only two times on a payline. All wins will pay only from left to right, meaning the winning combination must start from the very left reel of the slot.

There is nothing unusual about the low-value symbols of Book of Secrets Extra as the game uses the playing card values between 10 and Ace. While matching any of the playing cards three times will bring you the same payout of 0.5x your total bet, you will notice a slight increase in the payouts for four-of-a-kind and five-of-a-kind when you match Kings or Aces.

The symbols that will bring you higher payouts include richly ornamented Ankh and Scarab, with both of them paying 75x your original stake whenever they are matched five times. The highest payouts will be enjoyed whenever players match a pharaoh head and a female archaeologist five times, paying 200x and 500x your total bet respectively. The great thing about the mid-range and highest-paying icons of Book of Secrets Extra is that they will pay even when they appear only two times on a payline.

The Book of Secrets itself will act as both a Wild and a Scatter, combining different bonus features of the slot. Meanwhile, during free spins, any symbol, except for the Book of Secrets can be randomly chosen to be a special symbol.

Bonus Features of Book of Secrets Extra Slot

Bonus imageWhile you play Book of Secrets, you have the chance to increase your profit whenever a special feature of the game is triggered. Let us begin with the Book of Secrets symbol, which is so unique that it has several functions. The first one is to act as a Wild and substitute for other paying symbols, completing winning lines. The second function of the Book of Secrets is to trigger the Free Spins feature of the slot.

Whenever the Book of Secrets is matched three, four, or five times, it will award some of the biggest payouts in the game. It will also act as a Scatter whenever it appears three or more times on the reels, granting 10 rounds of free spins.

Whenever the Free Spins feature is triggered, the bonus spins will start after a random symbol has been selected as a special icon. Once a regular win during the free spins is complete, the special symbol may expand and add an extra payout depending on the positions it covers on a payline. The expansion of the special symbol is possible only if there are enough symbols for possible wins. The great thing about the Free Spins feature is that it can be retriggered when the Scatter lands three or more times on the reels.

Players will also have the chance to double their wins thanks to a Gamble feature. Whenever there is a win, players can choose to gamble their profit and double its amount if they are lucky enough. When they decide to gamble their wins, players will launch a bonus game with a playing card facing down. The goal is to guess whether the card is red or black. A correct guess will double your win and will allow you to either collect your profit or continue to wager it. If you guess incorrectly, however, you will lose all of the winnings you have wagered. There is also an option to bet only half of your winnings and potentially lose only a portion of your profit.


You can have a fun slot experience with Synot Games’ Book of Secrets Extra. The slot may resemble other Egyptian-themed casino games but it has a lot to offer, especially to those who manage to trigger the bonus feature. Those seeking even bigger payouts can always gamble their wins and hopefully double their profit with a single correct guess.