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” style associated with earlier games such as Book of Ra, pairing expanding traditional symbols with more powerful features intended to increase payout potential. The treasure-hunting premise is well known, but the Power Book mechanic can transform the grid and create opportunities for substantial wins, setting this game apart within the genre.
Book of Power Theme, Visual Style, and Core Mechanics
Book of Power offers a polished Ancient Egyptian world of pyramids and pharaohs, with a Hollywood-style archaeologist hero reminiscent of Indiana Jones and the Prince of Persia. Relax Gaming depicts the scenery more realistically than many older “book” slots. The background evokes the entrance or interior of an ancient Egyptian structure, with part of a large statue visible at the left. The reels retain classic Egyptian imagery, complemented by a subtle modern touch from the blue-and-gold pyramid symbol.
The soundtrack supports the setting without dominating it. Orchestral base-game music blends Middle Eastern melodies with violin and flute. The Free Spins feature keeps the same musical character, but its faster tempo and louder volume heighten the tension and add drama.
Book of Power features a 5x3 grid and 10 fixed paylines, with several variations on the traditional format. In the base game, the Power Bet option doubles the wager and increases the chance of entering the bonus round by 170%, while also unlocking access to Power Free Spins.
Top Casinos to Play Book of Power:
Book of Power Symbols: Archaeologists and Ancient Relics
Book of Power takes its symbols from Ancient Egyptian mythology. The paytable features low-paying card ranks, valuable relic-themed premiums, and two special Book icons that govern the bonus features. All symbols use 10 fixed paylines: premium combinations can pay from two matching symbols, while low-value symbols require at least three.
Regular Paying Symbols
The paytable includes familiar royal cards alongside more valuable Egyptian-themed symbols:
- Low-Paying Royals: The royal symbols are the 10, J, Q, K, and A card ranks. Five of a kind pays between 10x and 15x the bet.
- High-Paying Premiums: Blue pyramids, green tombs, and purple pharaohs make up the premium tier. They can pay from two matching symbols, with five of a kind worth 75x to 200x the stake.
- The Archaeologist: The archaeologist is the top ordinary symbol, paying 500x the bet when five appear across a full line.
*The payout table below uses 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 features two distinct Books: the Blue Regular Book and the Red Power Book. Together, they provide the main ways to pursue 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 trigger either of the game's two Free Spins modes.
- Direct Payouts: Five Books of either colour on a payline pay 500x the total bet.
- Power Trigger: The blue Book triggers regular Free Spins, while the red Power Book is required to activate the enhanced Power Free Spins mode.
Special Bonus-Round Symbols
Symbols gain additional functions during bonus rounds through expansion and multiplier effects:
- Expanding Symbols: At the start of Free Spins, the game randomly selects a paying symbol to expand. At least two premium symbols or three low-paying symbols must land on different reels for expansion to occur.
- Symbol Multipliers: If a retrigger selects the symbol already acting as the expander, that symbol gains a +1 multiplier, up to a maximum of x9.
- Golden Reel Transformation: In Power Free Spins, a red Power Book landing on reel 2, 3, or 4 turns that reel into a Golden Reel. The selected special symbol then expands on that reel for the rest of the round, even if it does not land there again.
Strategy Review: Power Bets and Feature Buys
The main strategic factor is the high volatility of the bonus features. A Lucky Boost may randomly appear as a Free Spins round begins, potentially improving the odds of a larger payout.
In eligible regions, the review states that Regular Free Spins can be purchased for 100x the bet, while Power Free Spins cost 200x the bet. Alternatively, Power Bet costs 2x the bet and is described as raising the chance of triggering Free Spins by 170%.
The base game may include long stretches with few or no rewards, so some players may see Power Bet as a way to pursue the bonus more frequently. Buying Free Spins outright requires a much larger stake, and neither option ensures a win.
Alternatives to the Book of Power Slot
Players attracted to Book of Power's high volatility and expanding symbols may also enjoy slots with similar risk or particularly powerful bonus mechanics:
- Book of Dead (by Play’n GO): This well-known Egyptian-themed slot pairs expanding symbols with Free Spins and a treasure-hunt setting similar to Book of Power. Its high volatility and expanding-symbol feature can lead to much larger bonus payouts, making it an apt comparison with Book of Power's enhanced Book feature.
- Gates of Olympus (by Pragmatic Play): Gates of Olympus replaces paylines with a pay-anywhere tumble mechanic, using cascades and large multipliers to deliver high volatility. Its bonus round is similarly dramatic and unpredictable for players pursuing big single-spin results. Unlike Book of Power's ordered reels and expanding symbols, it relies on cascades and multipliers, with no symbol expansion.
Book of Power Slot Verdict
Book of Power is a strong fit for players who enjoy expanding symbols in particular. Its Egyptian theme is familiar, but Golden Reels and symbol multipliers bring meaningful variety to the bonus cycle. The stated 15,000x maximum win is an ambitious figure in a crowded category, but it describes potential rather than a guaranteed payout.
Evan Carrington brings more than 12 years of experience in the iGaming industry, specializing in online casino reviews, slot game analysis, and player safety assessments. Their expertise includes casino licensing, RTP, volatility, bonus terms, and withdrawal policies. Combining hands-on reviews with independent research, Evan provides clear, evidence-based coverage to help players understand gambling platforms, their features, and possible risks.
