Book of Eye

by Onlyplay
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Game features
June 2021
Bet Size
€1 - 50
Max Win
Bonus Buy, Expanding Symbol, Extra Wild, Free Spins, Increasing Multiplier, Multiplier, Scatter, Single Reel Respin, Sticky Wild, Wild
3D, Adventures, Ancient Egypt, Books, Desert, Fire, Myths

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Pros and cons
  • Colossal max win up to 55,000 times the bet
  • Features four distinct slot bonuses
  • High maximum bet of $50
  • Supports both iOS and Android platforms
  • Lower RTP of 95.55%
  • Only 10 ways to win

Book of Eye Slot Review

Developed by Onlyplay, the Book of Eye slot machine sweeps players away into an Egyptian-themed adventure filled with ancient symbols and the chance to discover hidden treasures. While this slot was developed by a relatively new player in the online casino game industry, Book of Eye competently competes with offerings from more established software providers, making a mark with its engaging theme and graphics.

The design and atmosphere of the Book of Eye online game deliver a high-quality, immersive experience that captivates players through its rich graphical representation of the Egyptian theme. The game’s atmosphere is elevated by artwork that showcases ancient artefacts and a selection of Egyptian gods, with every spin offering a chance to uncover more of this civilisation’s mythology.

The plot centres around ancient Egyptian culture, with principal characters that include Egyptian deities like the revered Egyptian Goddess and formidable figures like Anubis and Bastet. Their roles as high-paying symbols add a significant narrative element to the game rules, with a focus on winning combinations featuring these revered icons.

The animation quality is expertly crafted in Book of Eye, with additional animations enhancing the functionality and visual appeal when special symbols activate bonus rounds or form winning combinations. Although not replete with full video sequences, the slot utilises subtle and thematic animations that add life to each spin and celebrate winning moments.

For the auditory experience, Book of Eye features a melodic soundtrack that fits the ancient Egyptian theme like a glove. The music and accompanying sound effects are well-composed, not overshadowing but complementing the visual experience of the slot, adding depth to the overall user experience.

For players looking to explore similar themes on their smartphone or tablet, games like “Book of Ra” by Novomatic and “Cleopatra” by IGT also offer an Egyptian experience and are accessible in both demo mode and real money play.

Book of Eye’s multi-platform design means it’s seamlessly playable on both iOS and Android devices, which is a boon for players looking to enjoy the game on various mobile devices.

The target audience for Book of Eye is broad, encompassing both novice and experienced players, and particularly appealing to those with an affinity for high-volatility slots and historical or mythological themes.

How to Play Book of Eye

The Book of Eye casino slot flaunts a conventional structure with 5 reels and 3 rows, grounded in 10 fixed paylines. As a standard offering in the realm of video slot games, its straightforward format is complemented by the unique respin feature, granting players the ability to respin individual reels, adding a strategic twist that can impact the outcome of the game and affect the hit frequency.

For a shot at winning, players must align matching symbols, a task made easier with the presence of a Wild/Scatter symbol. The user interface is designed for ease of play, integrating seamlessly into the Egyptian theme with a layout that is simple to navigate and understand, enhancing the player reviews and ratings of the game.

Key control buttons in Book of Eye include:

  • Bet Size: Players can increase or decrease their total wager using this button.
  • Spin Button: A prominent button that sets the reels into motion for manual spins.
  • Auto-Play Button: For players looking for a more hands-off experience, this feature executes a predetermined number of spins automatically.
  • Slot Information: Accessible through the game menu, this section elaborates on the Book of Eye game rules and paytables.
  • Mute Button: For toggling the sound effects on or off to customise the gaming experience, located within the settings.

The betting range in Book of Eye accommodates various player preferences, encouraging stakes from a minimum of $1 to a maximum of $50 per spin. The maximum win, a representation of high variance, promises up to 55,000 times the total bet, a factor that, alongside the Book of Eye RTP of 95.55%, demonstrates the slot’s potential for significant payouts. While the RTP is slightly lower than the average for online slots, the high variance indicates that the slot can dispense substantial rewards, albeit infrequently.

Game Rules

Book of Eye Symbols

The symbols in the Book of Eye slot are purposefully crafted, integrating icons synonymous with the Egyptian theme, from deities to sacred animals and traditional card symbols. These symbols encompass both the historical essence and the innovative trends in modern slot design, providing a variety of ways to win through these animated and thematic icons. With these symbols, players can enjoy vivid depictions of the slot’s narrative during both regular and demo mode gameplay.

Symbol Payout Table:

Symbol 2 in Line 3 in Line 4 in Line 5 in Line
Egyptian Goddess 1x 10x 100x 500x
Falcon 0.5x 4x 40x 200x
Anubis 0.5x 3x 10x 75x
Bast 0.5x 3x 10x 75x
Ace 0.5x 4x 15x
King 0.5x 4x 15x
Queen 0.5x 2.5x 10x
Jack 0.5x 2.5x 10x
Ten 0.5x 2.5x 10x

Special Symbols

Special symbols serve as crucial elements in the Book of Eye slot, distinguishing themselves from regular symbols with their pivotal roles and lucrative potential. These symbols not only amplify the prospect for winning combinations but also serve as points of entry into the slot’s bonus rounds, setting the stage for the main event in the Book of Eye free play and real money sessions.

  • Wild/Scatter Symbol: The Book of Eye: Representing both a wild and scatter symbol, the iconic Book of Eye aids players in fashioning winning combinations by substituting other symbols. Its scatter function triggers payouts that do not rely on paylines and is also the gateway to the slot’s Free Spins feature. Gathering three or more Book of Eye symbols anywhere on the reels will reward the player with a high payout and up to 10 free spins. Three, four, or five symbols will fetch a winning of 3, 10, and 200 times the initial bet, respectively.
  • Sticky Wild Symbol: Exclusively featured during the Free Spins round, the Sticky Wild is illustrated by a luminous sun symbol that, once it lands, tenaciously adheres to the reels for the duration of the free spins. Acting as a substitute for other symbols to forge winning combinations, it begins with a 1x multiplier and can incrementally compound winnings with each free spin, bolstering the overall payout potential significantly.

These special symbols are at the core of the Book of Eye game’s excitement, enriching the gameplay with suspense and the allure of big rewards. Their integration into the Egyptian theme adds an extra layer of depth to the slot, aligning with player expectations and contributing to the game’s positive reviews and ratings.

Book of Eye Features

In the Book of Eye slot machine, the bonus features are strategically integrated to enhance the gameplay and offer substantial opportunities for player profit. These features are not only relevant to the game’s Egyptian theme but also add unique gameplay elements that help it stand out in the crowded market of online slots. The alignment of bonus features with thematic elements provides an immersive experience, heightening the excitement and appeal of the slot. These features also reflect current trends in the slot gaming industry, catering to players who appreciate innovative and interactive bonus rounds.


The Respins feature adds a tactical edge to the Book of Eye slot gameplay, allowing for manual control after each spin. Players have the opportunity to perform individual reel respins at an added cost, which is clearly displayed and factors into the decision-making process. This aspect of user experience aligns with current trends in player autonomy and strategic play, allowing for a hands-on approach to influencing the outcome of the game. Notably, altering the bet size disables the respin option until the next round, adding a strategic layer to bankroll management.

Free Spins

The Book of Eye free spins round is triggered when players land three or more Book of Eye scatter symbols across the reels, ushering in a new phase of gameplay. In this bonus round, a symbol is randomly chosen to become an expanding icon, offering the potential to dramatically increase winnings. If the selected expanding symbol lands and is part of a winning combination, it will stretch across the reel to enhance the payout, with potential wins multiplying up to 5,000 times the bet. The sticky wild symbols, represented by a blazing sun, also play a crucial role during these free spins, providing additional opportunities for winning combinations with their multiplying effect, which starts at 1x and progressively increases with each free spin.

Sticky Wild Multipliers

The sticky wild symbols are an exclusive feature of the Book of Eye free spins game mode, providing an additional layer of excitement and potential winnings. Once these blazing sun symbols appear, they lock in place for the remainder of the free spins, substituting for other icons to form potentially winning combinations. Moreover, the sticky wilds begin with a 1x multiplier which increases with each free spin, offering players the chance to significantly boost their payouts as the round progresses. This feature epitomises the slot’s variance, delivering the possibility of substantial rewards that align with player expectations for a high-volatility game.

Sticky Wild Win Spin
Speed Up Bonus

Speed Up Bonus is a feature that performs the purchase of a bonus mode. If a player wants to skip the normal spins and instantly go to the Free Spins mode he can use this option worth 110x the bet level and start hunting for big wins.

Bonus Buy Feature

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