Book of Power
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Book of Power
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Book of Power Slot Review

Mobile Video Slot by Relax Gaming Play Now at Vera & John » More Relax Gaming Casinos
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How to play Book of Power mobile slot

The Book of Power slot gives you 5 reels with 10 paylines filled with ancient Egyptian symbols that could be worth as much as 15,000x your bet thanks to two free spin bonus rounds.

The adventurer is the highest-paying symbol, which surprises no one who has ever played on the Book of Ra Deluxe slot or read the Book of Dead review.

It’s a slot theme that has worked well in the past, and you know what you will get. You have a Pharaoh, a tomb, a pyramid and those ace to 10 finishing the paytable.

But it’s the two books of power that will make your eyes shine because they will trigger 10 to 20 free spins with expanding scatter pays. In one version, you can add extra expanding scatter pays; in the other, you can upgrade them and even add multipliers.

First Things First: The Power Bet

Before you start playing, it’s worth doubling your bet by pressing the power bet option in the top left-hand corner. You might double your bet, but you increase your odds of winning the free spins by 170%.

That’s better odds than the Winterberries 2 slot and the Little Big Horn slot game. And the minimum bet of this 10 payline slot only increases from 0.10 to 0.20 a spin, which is still very affordable for all budgets.

Because the main draw in the Book of Power mobile slot by Relax Gaming studios is the free spins bonus. Get 3 or more of those blue books, and you win normal free spins.

Get a mix of red and blue books, and you win the Power free spins which could win you as much as 15,000x your bet.

The Book of Power slot free spin bonuses:

This is a buy-free spins slot, so for 100x your bet, you can just buy entry into the bonus – which you get is down to luck.

The normal free spins are great fun. Much like in the Book of Inferno slot, one symbol is chosen as an expanding scatter pay. It pays on all 10 payline, and you can see you win big.

If you retrigger, you get a second expanding scatter pay symbol.

The Power Free spins work much the same way, except on a retrigger, you upgrade the expanding scatter pay symbol and potentially add multipliers if you are already on the highest paid symbols.

It’s not easy to retrigger, but even if you don’t, you can win big. The potential and the dream are here; sometimes, that’s all you need to enjoy a new video slot online.

Game Screenshots

Book of Power slot stats

Mobile Slot releasedMarch 2023
Slot typeVideo Slot
SoftwareRelax Gaming
Slot reels / paylines5 Reels / 10 Paylines
House edge / RTP3.89% / 96.11%
Slot volatilityHigh
Min/Max bet0.10 / 60
Max win15,000x your bet
Free spins10 to 20 Free Spins / Expanding Scatter Pays
Bonus roundsWild, Scatters, Free Spins, Richer Reels, Multipliers, Expanding Scatter Pay, Superbet, Buy Bonus
Slot ThemesAdventure & Explorer
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Bonus Features

Wild Scatter: Two book symbols are on the reel, one blue and one red. They are wild symbols and replace any other symbols on the reel. They also trigger the free spin bonus.

Normal Free Spins: Land 3, 4, or 5 blue book symbols, and you'll win 10, 15 or 20 free spins. One special symbol will be chosen to act as an expanding scatter pay. These pay on all paylines regardless of where they land on the reel and will always expand to cover the whole reel.

If you get 2 book symbols during the free spins, you'll get an additional expanding symbol and +5 extra spins.

Power Free Spins: When you get 3 Book symbols, one of which is a red wild, you win the Power free spins. 3, 4, or 5 scatters will trigger 10, 15 or 20 free spins.

During the power free spins, the symbol can expand and, in addition to normal line win, will pay out on all 10 lines as it covers the reels. The difference is that 2 book symbols will upgrade the expanding scatter pay symbols to the next one in the paytable and add +5 free spins. Once you are on the highest paid symbol, any further retriggers will away a +1 multiplier to the expanded symbol.

Landing a power Book symbol on reels 2, 3 or 4 will turn that reel gold, and the expanding symbol will expand even if no expanding symbol lands on the reels.

Power Bet: for an increased cost of +100%, you increase your chance of catching the free spins by +170%. If you trigger the free spins, you can gamble on a 50/50 game to catch the Power Free Spins.

Buy Bonus: for 100x your bet, you can buy entry into the free spins. It could be normal free spins, or it could be the power spins. the RTP 96.11% does not change even if you buy the Book of Power slot bonus.


  • High 15,000x stake max win
  • High 96.11% RTP
  • Free spins with Expanding Scatters
  • Power Spins with bigger wins


  • Theme isn't original
  • RTP can differ depending on slot sites

Book of Power Review Conclusion

There are not many 'Book of' games that can promise wins of 15,000x your bet, and for that allows, this Book of Power slot machine gets our vote of confidence.

That said, remember that to catch those big winning multipliers, you'll need to retrigger the super bonus to the max.

This is no easy feat, but we love that you get to use the superbet option to help increase your odds of catching those power spins. If you don't aim for those, you might as well play on the Book of Sam slot or the Book of Tut Respins game.

So press that power bet and get spinning at your favourite online casinos.

Ready To Start Spinning?
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Review by Lucky Mobile Slots, last updated: March 17, 2023 - Rating 4

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