Book of Power Review

From Relax Gaming

Relax Gaming breathe new life into this classic format thanks to Free Spins round enhancements that see your expander symbols upgraded, multipliers come into play and re-triggers keep the round going for epic, progressive wins!



Name:  Book of Power

Developer:  Relax Gaming

Paylines:  10

Reels:  5

Rows:  3

RTP:  96.11%

Variance:  High

Top Payout:  15,000x

Jackpot:  No

Release Date:  March 2023

Features:  Wilds, Expanding Symbols, Multipliers, Free Spins, Expanding Symbol Upgrades

About This Slot

Book of Power is the fourth in a series of slot games developed by popular studio, Relax Gaming, in partnership with gambling community site, Casino Grounds. The idea is that with the benefit of feedback from a group of fanatical slots players during development, Relax can kick out some really top notch content. Earlier releases like Beast Mode, have shown that idea to work and Book of Power provides further evidence. Here, expander upgrades and multipliers are added to the standard Book of … format to energise this game and give it the power to become a hit in its own right.


Theme and Design

This is a good-looking slot. As you would expect, it’s all standard Egyptian-stylings with huge stone temples in the background and a lavish reel set featuring pyramids, Egyptian Pharaohs and Scarab Beetles symbols. Key animations like the Book opening to reveal the special symbol at the of the free spins round look superb and overall this is elegant, atmospheric game with top production values.

RTP, Variance and Top Payout

Book of Power has an RTP of 96.11%. This about standard for a Relax Gaming slot. For comparison, one of their most popular titles, Money Train, runs at 96.12%. The most popular Book of slot, Book of Dead by Play n Go, has a 96.21% RTP.

Variance is, as to be expected of a Book of game, very high. Expect much frustration, but with free spins, multiplier and expanding symbol combinations, big win sequences will definitely be a possibility for those with patience. The top win in Book of Power is maxed out at 15,000x which is significantly higher than Play n Go’s Book of Dead (5,000x) but not as high as other recent Relax Gaming slots like Dead Rider’s Trail for example (50,000x).

Symbols and Graphics

Book of Power takes place on a 5 reel and 3 row set with just 10 active paylines. This is a standard Book of set up. Wins are scored by landing three or more identical symbols on the reels from left to right across a payline.

Low payers are the cards, 10 through to Ace. They have values of 0.5x for three 10s up to 15x for five Aces. Premiums are the Pyramid, Scarab, Pharaoh and Explorer character. These are valued at between 0.5x for three Pyramids up to 500x for five Explorers.

In classic Book of style, the Book symbol is VERY powerful. It doubles up as the Wild and Scatter. So it substitutes in for all other symbols to complete win lines, pays out 10x, 100x or 500x for 3, 4 or 5 on a payline AND triggers the free spins round. In this instance there is also a Power Book symbol that does all that and triggers a Power Free Spins feature as well.

What We Like

  High value premium and wild symbols
  Chance to upgrade expander in Power FS
  Two expander symbols earn multpliers
  Good potential at 15,000x
  Re-triggers in bonus rounds

What We Don't Like

  Another Egyptian-themed slot!

Gameplay and Features

The features are all about the free spins round and expander symbols. But Relax have added some nice twists on the original Book of format to power-up your payouts.

Standard Free Spins With Multiple Expanders, Multipliers and Extra Spins

First comes the standard Free Spins round. Three or more Book symbols will get you in with 10, 15 or 20 spins for 3, 4 or 5 Books. As the round begins, the Book is displayed centre screen and opens to reveal which character will be the special for the round. When that one lands and forms part of a win, then it expands to full reel height and may create more wins.

The round is enhanced if you land TWO book symbols on one of your free spins. Then another symbol is chosen as an expander and the round is extended by FIVE spins. And if the new chosen symbol is already an expander, it simply gets an extra 1x multiplier, up to maximum of 9x. 

Power Free Spins With Symbol Upgrades and Golden Reels

The enhanced Power Free Spins round is triggered by landing three Books where at least one is a Power Book. This time you get 10, 15 or 20 Power Free Spins as well as your 10x, 100x or 500x payout.

Standard rules apply – expander is chosen, it expands when landing and being part of a win. Now, however, when two expanders land on the same spin, your expander is upgraded to the next higher in the paytable. Plus you get FIVE more spins. And if your expander is the highest paying Explorer, then it gets a 1x multiplier added, up to a maxium of 9x.

Finally, should you land a Power Book on reel 2, 3 or 4, then the reel becomes golden and expanders always land on those reels for the remaining spins.

Random Hot Mode Enhances Your Odds 

And there is one final twist – Hot Mode may trigger randomly at the start of either bonus round. If it does then the whole round is played with increased odds of scoring the big wins.


More Games Like Book of Power

Beast Mode by Relax GamingThis ‘weight lifting’ game was also developed with the Casino Grounds group and proved to be a big hit. With expanding rows up to 7 high and 4,096 paylines, Cascading Wins and Mystery Spins provide innovative gameplay.

Book of Shadows by Nolimit City For a more leftfield take on the Book of … series, try this horror version by Nolimit City. The theme and artwork, featuring a scary witch girl make this a compelling play. Standard expanders and a 10,000x top win included.


Where to Play Book of Power Slot – Further Recommendations

NY SpinsTry playing Book of Power at this SuprPlay casino which has more than 1,000 slots to try and a special 1v1 tournament feature where you can battle other players on slots to win bonuses and spins. Deposit from £20 – Paypal included. 

CasumoAlternatively, try our favourite UK slot site, Casumo, where you can enjoy over 2,900 slots and live dealer tables, including Relax Gaming slots. Hourly reel races with £1,000s prizes add jeopardy to your spins. Deposit start at just £5.

Our Verdict

In a crowded niche, Book of Power, has enough innovation and twists to make it stand out and become a hit in its own right. As we expect from Relax, this is a carefully planned and developed game with really enjoyable graphics and gameplay.

The addition of extra expanders and multipliers in the first free spins round can potentially propel your wins upwards significantly. But it’s the Power Free Spins round where most of the epic payouts will come. Consecutive symbol upgrades and multipliers at the top end of the paytable along with re-triggers mean that you could be looking at full screens of Explorers with multipliers as well.

Fans of the Book of series will love it!