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Book of Power

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Our rating:
  • A new ‘book of’ slot from Relax Gaming with some changes
  • A simple design and no base game features
  • Two main bonuses and a great win potential

Book of Power slot is a new game that builds on the hugely popular, and arguably overdone, ‘book of’ series originally from PlayNGo. Relax Gaming’s newest addition offers some big payouts and something a bit different to help it stand out, but we’ll have to get into finer detail on how it works shortly to decide if it’s any good. They haven’t changed the theme from the original, this one still has an ancient Egyptian theme that doesn’t really stand out from the countless others out there. There are 5 reels to play on with 3 rows, giving you a total of 10 pay lines and these can be seen on the sides. Just look for a combination of at least 3 matching base symbols to get a payout. These are ranked as follows in ascending order based on their value:

  • 10, Jack or Queen
  • King or Ace
  • Pyramid or Tomb
  • Sphynx
  • Man


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Book Of Power Slot Bonuses And Features

Like the original game and most slots, you have a number of features here to look forward to.

Book Wilds. There’s a blue and red book in this game. Both function as a wild symbol, substituting for all others in a winning combination apart from the special expanding symbol in the free spins bonus.

Free Spins Bonus. For this you need 3 or more book symbols anywhere on the screen during the base game. Just 3 will give you 10 free spins, but 4 will give you 15 free spins and 5 will give you 20 free spins. During these, a special expanding symbol is chosen at random, as you’d expect from a book of slot. These will expand during the bonus, paying out in addition to a normal line win on all 10 lines. If you land 2 book symbols during the bonus, another 5 free spins will be given and a new expanding symbol is chosen, unless it’s the same one in which case its multiplier is increased by 1x.

Power Free Spins. This is what sets this game apart, and it’s triggered with 3 book symbols including a power book. You’ll get 10, 15 of 20 power free spins for 3, 4 or 5 scatters. An expanding symbol is also chosen here that expands and pays out like the other bonus. 2 book symbols will also give you 5 more free spins. If you land a power book symbol on reel 2, 3 or 4, that reel will turn golden and the expanding symbol will expand here even if it doesn’t land on the reel.

Power Bet. You can double your bet in this game to increase your chance of getting a free spins bonus by 170%.


Book of Power slot from Relax Gaming is another attempt at cashing in on the popular book of series, and they have made some changes from other games like it. The base game is quite dull and not much happens here, but there are 2 main bonuses, one being a standard book of bonus and the other being an improved version. Both are quite good, and the power spins are a nice touch that could make this game worth while, especially considering the 15,000x win potential on offer which is much higher than most book of slots.

Big Win Potential But Dull Design





  • Two bonuses.
  • Big win potential.


  • Dull base game.
  • No base game features.

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