Return to player
96.11%
Min bet size
0.10
Game type
Video Slots
Variance
High
Reels
5
Progressive Jackpot
No
Popularity
Max bet size
60
Game provider
Relax Gaming
Bonus Features
Yes
Paylines
10
Theme
Ancient Egypt
Book of Power online slot game
Book of Power is a high-volatility, Egyptian-themed slot from Relax Gaming in partnership with CasinoGrounds. Building on the classic “Book of” mechanics made famous by earlier hits like Book of Ra, this title blends traditional expanding symbols with enhanced power features designed to increase payout potential. While it follows the familiar treasure-hunt theme, it also introduces a Power Book mechanic that can transform the grid for explosive wins, making it one of the more rewarding entries in the genre.
Book of Power Theme, Design, and Core Mechanics
Visually, the game offers a polished take on Ancient Egypt, featuring pyramids, pharaohs, and a classic Hollywood-inspired archaeologist protagonist reminiscent of Indiana Jones and the Prince of Persia. Relax Gaming has opted for more realistic background visuals compared to older “book” slots. The grid background depicts the interior or entryway of an ancient Egyptian structure, with part of a large statue visible to the left. The symbols on the grid, while true to the classic Egyptian aesthetic, include a subtle touch of modernity, most noticeable in the blue-and-gold pyramid tile.
The soundtrack is inviting and fits the game well. The base game is scored with orchestral music featuring Middle Eastern melodies carried by violins and flutes. During the Free Spins rounds, the music retains the same thematic base but increases in tempo and volume, adding to the sense of tension and enhancing the high-stakes atmosphere.
The game operates on a 5x3 grid with 10 fixed paylines, but introduces several innovative twists. One of these is the Power Bet feature in the base game: by doubling the bet, players increase their chance of triggering the bonus round by 170% and unlock the possibility of winning Power Free Spins.
Top Casinos to Play Book of Power:
iWild Casino
200% up to €1,000 + 200 Free Spins
SlotLounge Casino
100% up to €2,000 + 200 Free Spins
Vegazone Casino
100% up to €500 + 100 Free Spins
Spirit Casino
100% up to €2,000 + 200 Free Spins
VIPLuck Casino
100% up to €500 + 100 Free Spins
Book of Power Symbols: Archeologists and Ancient Relics
The symbols in Book of Power are rooted in Ancient Egyptian mythology, categorized into low-paying card ranks, high-value premium artifacts, and two specialized Book icons that drive the game's bonus mechanics. These icons are designed to work across 10 fixed paylines, where premiums pay out for as few as two matching symbols while lower-tier symbols require at least three.
Standard Paying Symbols
The paytable is split between standard royals and more lucrative thematic imagery:
- Low-Paying Royals: These are represented by regal 10, J, Q, K, and A card symbols. A five-of-a-kind combination of these royals awards between 10x and 15x your bet.
- High-Paying Premiums: This tier includes blue pyramids, green tombs, and purple pharaohs. These symbols offer payouts starting from two-of-a-kind, with five-of-a-kind matches worth between 75x and 200x the stake.
- The Archeologist: Serving as the game's most valuable standard icon, the archeologist pays out 500x the bet for a full line of five symbols.
*The symbol payout chart shown below is calculated 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 Dual-Purpose Book Symbols
The game features two distinct Book icons: the Blue Regular Book and the Red Power Book. These act as the primary engines for big wins.
- Wild and Scatter Roles: Both books function as Wild symbols, substituting for any non-expanded pay symbol, and as Scatters to trigger the game's two free spin modes.
- Direct Payouts: Landing a line of five books of either color awards an impressive payout of 500x the total bet.
- Power Trigger: While the blue book triggers standard free spins, the red Power Book is required to trigger the enhanced Power Free Spins.
Special Symbols in Bonus Rounds
During the bonus rounds, symbols gain unique properties through expansion and multipliers:
- Expanding Symbols: At the start of free spins, a random pay symbol is chosen to expand. For an expansion to occur, you need at least two premium symbols or three low-paying symbols on different reels.
- Symbol Multipliers: If a retrigger awards a symbol that is already active as an expander, it receives a multiplier of +1, which can reach a maximum of x9.
- Golden Reel Transformation: In Power Free Spins, landing a red Power Book on reels 2, 3, or 4 transforms that reel into a Golden Reel. On these reels, the special symbol will expand for the duration of the round even if it does not actually land on that reel during a spin.
Strategic Assessment: Power Bets and Feature Buys
Strategy revolves around navigating the high volatility of the bonus rounds. The Lucky Boost can trigger randomly at the start of any free spin, further increasing the chance of a major payout.
For players in eligible regions, direct access is available with Regular Free Spins being purchasable for 100x the bet, while Power Free Spins cost 200x the bet. In contrast, a 170% chance increase in landing Free Spins rounds for only 2x the bet can be activated via the Power Bet feature.
Since the base game is relatively tame with long dry or low-reward spells, spending that extra little bit of cash to activate the Power Bet feature or even really hiking up the stake by directly purchasing Free Spins is often considered a vital tool to improve your chances of winning big.
Good Alternatives to the Book of Power Slot
If you enjoy the high volatility and expanding symbol mechanics found in Book of Power, several other slots offer a comparable risk-reward profile or similarly explosive bonus features:
- Book of Dead (by Play’n GO): Book of Dead is a classic Egyptian-themed slot with expanding symbols and free spins, offering a similar treasure-hunt feel and high volatility that players of Book of Power enjoy. The expanding symbol mechanic in free spins can dramatically boost payouts, echoing the bonus structure of Book of Power’s enhanced book feature.
- Gates of Olympus (by Pragmatic Play): Gates of Olympus replaces paylines with a pay-anywhere tumble system, delivering high volatility through cascading wins and massive multipliers. Its bonus rounds feel explosive and unpredictable, appealing to players who enjoy chasing large single-spin payouts. However, unlike Book of Power’s structured reels and expanding symbols, this slot relies entirely on multipliers and cascades with no symbol expansion.
Book of Power Slot Verdict
Book of Power is a fantastic option for fans of the expanding symbol mechanic. While it sticks to a traditional theme, the addition of Golden Reels and symbol multipliers provides enough mechanical depth to keep the gameplay fresh. With a rewarding 15,000x max win, it stands tall among its peers in a crowded genre.
James is a casino games expert on the Playcasino.com editorial team. With many years of professional experience at a leading casino game development company and a passion for playing casino games, James has become a true expert in slots, blackjack, roulette, baccarat, and other games.
James uses this expertise to provide reliable, insider advice through his reviews and guides, breaking down the game rules and offering tips to help you win more often. Rely on James's extensive experience for expert advice on your casino play.
