Theoretical return to player
96.11%
Minimum bet
0.10
Slot category
Video Slots
Volatility
High
Number of reels
5
Progressive jackpot
No
Popularity
Maximum bet
60
Software provider
Relax Gaming
Bonus features
Yes
Paylines
10
Theme
Ancient Egypt
Book of Power online slot review
Book of Power is a high-volatility slot set in Ancient Egypt, developed by Relax Gaming in partnership with CasinoGrounds. It builds on the familiar “Book of” formula associated with earlier releases such as Book of Ra, combining expanding traditional symbols with stronger power-based features intended to raise the game's payout potential. Although the presentation follows a well-known treasure-hunting setup, the Power Book mechanic can reshape the grid and create the conditions for substantial wins, giving this entry a distinctive place in the wider genre.
Book of Power Theme, Visual Style, and Core Mechanics
Book of Power presents a refined Ancient Egyptian setting filled with pyramids, pharaohs and a Hollywood-style archaeologist hero who recalls Indiana Jones and the Prince of Persia. Relax Gaming uses more lifelike scenery than many older “book” slots. The backdrop suggests the entrance or interior of an ancient Egyptian building, while a large statue is partly visible on the left. The reels retain the expected Egyptian look, though the blue-and-gold pyramid symbol adds a restrained modern accent.
The audio complements the setting without overpowering it. Orchestral music in the base game combines Middle Eastern melodies with violin and flute passages. When the Free Spins feature begins, the same musical identity remains, but the faster pace and higher volume raise the tension and reinforce the game's more dramatic atmosphere.
Book of Power uses a 5x3 grid and 10 fixed paylines, while adding several feature variations to the standard format. The base-game Power Bet option doubles the wager and raises the chance of entering the bonus round by 170%, while also opening the route to Power Free Spins.
Top Casinos to Play Book of Power:
Book of Power Symbols: Archaeologists and Ancient Relics
Book of Power draws its symbols from Ancient Egyptian mythology. The paytable combines low-paying card ranks, valuable relic-themed premiums and two specialised Book icons that control the bonus features. All symbols use 10 fixed paylines: premium combinations can pay from as few as two matching symbols, whereas the lower-value symbols need at least three.
Regular Paying Symbols
The paytable divides its symbols between familiar royal cards and more valuable Egyptian imagery:
- Low-Paying Royals: The royal group consists of 10, J, Q, K, and A card symbols. A five-of-a-kind result pays between 10x and 15x the bet.
- High-Paying Premiums: Blue pyramids, green tombs and purple pharaohs make up this higher-value tier. They can pay from two-of-a-kind, while five-of-a-kind combinations are worth between 75x and 200x the stake.
- The Archaeologist: The game's strongest ordinary symbol is the archaeologist, which pays 500x the bet when five appear across a full line.
*The payout table below is based on a $1.00 bet.
| Symbol | 5 Matches | 4 Matches | 3 Matches | 2 Matches |
|---|---|---|---|---|
 | 500x | 100x | 10x | 1x |
 | 500x | 100x | 10x | 1x |
 | 500x | 100x | 10x | 1x |
 | 200x | 40x | 4x | 0.5x |
 | 75x | 10x | 3x | 0.5x |
 | 75x | 10x | 3x | 0.5x |
 | 15x | 4x | 0.5x | - |
 | 15x | 4x | 0.5x | - |
 | 10x | 2.5x | 0.5x | - |
 | 10x | 2.5x | 0.5x | - |
 | 10x | 2.5x | 0.5x | - |
The Two-Role Book Symbols
Book of Power has two separate Book symbols: the Blue Regular Book and the Red Power Book. Together, they provide the main routes to the game's larger wins.
- Wild and Scatter Roles: Both Books act as Wilds, replacing any non-expanded paying symbol, and as Scatters that can start the game's two Free Spins modes.
- Direct Payouts: Five Books of either colour landing on a line award 500x the total bet.
- Power Trigger: The blue Book starts regular Free Spins, whereas the red Power Book is needed to activate the enhanced Power Free Spins mode.
Special Bonus-Round Symbols
Expansion and multiplier effects give symbols additional functions during the bonus rounds:
- Expanding Symbols: A random paying symbol is selected to expand when Free Spins begin. Expansion requires at least two premium symbols or three low-paying symbols to appear on different reels.
- Symbol Multipliers: When a retrigger selects a symbol that is already the active expander, that symbol gains a +1 multiplier, up to a maximum of x9.
- Golden Reel Transformation: During Power Free Spins, a red Power Book landing on reels 2, 3, or 4 converts that reel into a Golden Reel. The designated special symbol then expands there for the remainder of the round, even when it does not land on that reel on a later spin.
Strategy Review: Power Bets and Feature Buys
The main strategic consideration is the high volatility of the bonus features. A Lucky Boost may appear at random as a Free Spin round starts, potentially improving the chance of a larger payout.
In eligible regions, the review says Regular Free Spins can be purchased for 100x the bet, while Power Free Spins are available for 200x the bet. As an alternative, the Power Bet feature costs 2x the bet and is described as increasing the chance of landing a Free Spins round by 170%.
The base game can produce long stretches with little or no reward, so some players may view the Power Bet as a way to pursue the bonus more often. Buying Free Spins outright involves a much larger stake, however, and neither option guarantees a winning result.
Alternatives to the Book of Power Slot
Players drawn to Book of Power's high volatility and expanding-symbol features can also consider slots with a similar risk profile or unusually forceful bonus mechanics:
- Book of Dead (by Play’n GO): This established Egyptian-themed slot combines expanding symbols with Free Spins and a treasure-hunt presentation similar to Book of Power. Its high volatility and expanding-symbol feature can produce much larger payouts during the bonus, making the structure a natural comparison with Book of Power's enhanced Book feature.
- Gates of Olympus (by Pragmatic Play): Gates of Olympus abandons paylines in favour of a pay-anywhere tumble system, using cascading wins and large multipliers to create high volatility. Its bonus play is similarly dramatic and unpredictable for players pursuing sizeable single-spin results. Unlike Book of Power's ordered reels and expanding symbols, though, it depends on cascades and multipliers without symbol expansion.
Book of Power Slot Verdict
Book of Power should appeal to players who specifically enjoy expanding symbols. Its traditional Egyptian theme is familiar, but Golden Reels and symbol multipliers add meaningful variation to the feature cycle. The stated 15,000x maximum win places it among the more ambitious claims in this crowded category, although that figure is a potential limit rather than a promised outcome.
With 12+ years of experience in the iGaming industry, Evan specializes in reviewing online casinos, analyzing slot games, and evaluating player safety. Their expertise covers casino licensing, RTP, volatility, bonus conditions, and withdrawal policies. Through hands-on testing and independent research, Evan delivers transparent, fact-based reviews to help players better understand gambling platforms, their features, and potential risks.
