Book of Power - GAME REVIEW

7.7 / 10

To demonstrate that their partnership is more than just a casual fling, software provider Relax Gaming and gambling community Casinogrounds have once again teamed up to create an online slot game for players to enjoy. While the game may not appeal to all gamblers, those with a specific taste may find the collaboration’s latest creation, Book of Power, intriguing. As the name suggests, the game incorporates themes of books, Egypt, and expanding symbols. Given the imaginative and well-executed nature of their past collaborations, we eagerly anticipated taking.

Book of Power for a spin

Relax Gaming has established a reputation for themselves in the gaming industry, delivering games with stylish designs and incorporating unique gameplay mechanics that players have come to anticipate. Their games often feature attractive visuals and include one or two innovative features that keep players engaged.

The numbers present on the game grid (which may vary based on the screen size) allude to the lengthy history of the “book of” genre, but Relax Gaming has departed from the traditional approach by incorporating a more realistic background imagery.

Book of Power – Game Properties

Once the initial impressions of Book of Power are absorbed, it’s time to dive into the gameplay. The first step involves selecting a base bet ranging from 0.10 to USD/EUR 30 and deciding whether to activate the Power Bet button. Enabling this button doubles the stake and increases the likelihood of triggering Power Free Spins, as well as boosting the chance of activating any free spins feature by a significant 170%.

It comes as no surprise that the game boasts high volatility, with the RTP varying from 96.11% when betting on individual spins (with or without the Power Bet) to 96.5% when purchasing either of the free spins options. With the Power Bet active, players have the opportunity to gamble for a chance to win Power Free Spins when regular free spins are awarded.


Book of Power stays true to tradition by featuring 10 fixed paylines for players to land winning combinations. The game includes five pay symbol types that feature regal-looking 10-A card royals, along with four high-paying symbols that depict Ancient Egypt ( pyramids, Tutankamun masks, tombs and an Indiana Jones look alike) themes and an explorer character as the most valuable. A winning line composed of five matching symbols pays out 10-15 times the bet for the low-paying symbols and a generous 75 to 500 times the stake for the premium symbols.

Book of Power features not one, but two Book symbols: a standard Book and a Power Book. Both Books act as wild symbols, replacing any non-expanded pay symbol, and serve as the free spins scatter symbol.

Bonus Features

Book of Power doesn’t have many bonus features, making it an easy game to understand. Below, we will take a closer look at a few key points.

Free Spins

If players land 3, 4, or 5 Book symbols, they will receive 10, 15, or 20 free spins, along with a payout of 10x, 100x, or 500x the bet, respectively. At the beginning of the round, a pay symbol is chosen to become the special expanding symbol. During the free spins, in addition to any regular line wins, the expanding symbols will expand to cover all positions on their reels and pay out in any position.

If 2 Book symbols appear during the free spins, an extra expanding symbol is selected, and players are awarded an additional 5 free spins. If the new symbol is already an active expanding symbol, its multiplier increases by +1, up to a maximum of 9.

Power Free Spins

The Power Book Free Spins are identical to the regular Free Spins, with one exception:

If a Power Book symbol lands on reels 2, 3, or 4, that specific reel becomes golden, allowing the expanding symbol to expand even if it didn’t initially land on that reel.

Hot Mode

Hot Mode is available in both Free Spins features and may trigger randomly at the start of a spin, increasing the likelihood of landing a significant win.

Feature Buy

Book of Power offers two feature buy options: one for regular Free Spins at a cost of 100x the bet, and the other for Power Free Spins at a cost of 200x the bet.


The collaboration between Relax Gaming and Casinogrounds has become a recurring event, and for many gamblers, this is undoubtedly a positive development. Each previous release has been filled with imaginative concepts, memorable characters, a plethora of features, stunning artwork, and plenty of replay value.

In contrast to, for example Nolimit City with Book of Shadows, Relax Gaming and Casinogrounds have primarily stuck to tradition while incorporating a few innovative elements to rejuvenate the gameplay and provide book enthusiasts with something fresh to enjoy.

It’s worth noting that some of the features in Book of Power have been seen before, such as retriggers in the free spins round, which add an extra expanding symbol to the game. However, by upgrading only one expanding symbol with the introduction of multipliers – which is not likely to happen too frequently – the gameplay is given a new twist.

While some players may prefer expanding royals as they tend to hit more often, those who lean towards the higher end of the paytable will appreciate the boosted potential of the top symbol as an expander with an attached multiplier. This approach has also significantly increased the winning potential of Book of Power, with a maximum payout of up to 15,000 times the bet.

As far as we know, no one has recently accused the “book of” category of lacking options, but their appeal is undoubtedly apparent. Amongst this extensive and, some might say, overcrowded lineup, Book of Power stands out as a sleekly produced alternative that boasts impressive audio-visuals, unique personality, and engaging gameplay, allowing it to hold its own amongst its peers.


Software provider:
Game type: Video Slots
Return to player: 96.11%
Lines: 10
Reels: 5
  • Autoplay
  • Gamble - Double Up
  • Free Spins
  • Bonus Game
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