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Slot Review

Book of Diamonds

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87.73% Gold star

Book of Diamonds by Spinomenal
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USARated 99.98/100%

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300%/$1,500 + 100 Free Spins

30x wagering

Number of games
11+
Payment methods
6
Game providers
10
Min deposit
25
US Players
Accepted

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Updated: Jul 9, 2025

Quick Facts

Provider: ProviderThe Slot Provider is none other than the company who developed the slot. Simply click on the name of the provider to find our more about it!
Date Launched: Date LaunchedThe date when this slot game was launched. 25/06/2020
Theme: ThemeTheme is the general genre that the the slot could be classified as. One of the elements that makes slot games appealing, A nicely planned popular theme can potentially skyrocket the popularity of an online slot! Book of, Diamonds, Fruits, Gems
Jackpot: JackpotA stand-alone or multi-leveled progressive prize pool that a player can win at a given time, simply by spinning the reels.
Special Symbols: Special SymbolsThe special symbols of a slot are part of its mechanic. Elements such as Wilds, Scatters and regular paying symbols come together to form winning combinations. Expanding, Scatters, Wilds

Review Summary

Book of Diamonds strikes a balance between classic slot nostalgia and modern feature-driven excitement, appealing to players who enjoy a calculated gamble. Its 5x3 grid and 10 paylines keep the structure familiar, but the high volatility injects a thrill, with a max payout of 5,000 times the bet as the ultimate prize. The Book symbol pulls double duty as Wild and Scatter, triggering Free Spins where Expanding Symbols can transform a round into a major win—especially if a premium symbol lands. The Buy Feature caters to those who prefer instant access to the bonus, though it’s a costly shortcut. Visually, the game pops with crisp graphics and fluid animations, performing seamlessly across platforms. That said, the high volatility might alienate players seeking steady returns, and the limited paylines can feel restrictive. With a 96.14% RTP, it’s a solid pick for risk-takers chasing big rewards.

Slot Information

Return to Player (RTP): Return to Player (RTP)The Return to Player is a statistic that aims to show the player's edge over the casino - the higher this number is the better! We review all slots based on this RTP value so click on the percentage on the right to find our more slots with a similar RTP! 95.9%
Volatility/Variance: Volatility/VarianceVolatility or Variance is meant to describe the winning potential of a slot game: a high volatility will have you win big but no so often, while a low volatility will let you win frequently, but less. High
Progressive Slot: Progressive SlotA progressive slot is a slot that keep on growing its total possible winning pool; usually linked by a network of slots. It is also known as a jackpot.
Slot Type: Slot TypeSlots can be categorized as classic, 3D, video slots, etc. Click on the type of slot on the right to see similar types of slots! Video Slot
Rows: RowsPart of the design of the slot, the rows are the horizontal lines that trigger special features when certain paying symbols fall in place.3
Reels: ReelsReels are the vertical lines that are build in the slots architecture; together with the rows they help trigger special winning combinations.5
Paylines: PaylinesPaylines, or betting lines, are the pre-determined links of symbols across the rows and reels of a slot. A slot can have anywhere from just 1 payline or up to thousands paylines! 10
Slot Layout: Slot LayoutThe layout of the slot is the way the slot is built, based on the number of rows, reels and paylines. 5 x 3

Slot Features

Minimum Bet: Minimum BetThe minimum accepted amount that will allow you to spin the reels of this slot game. $0.1
Maximum Bet: Maximum BetThe maximum accepted amount that will allow you to spin the reels of this slot game.$100
Maximum Win: Maximum WinThe total maximum amount that you could win triggering the biggest winning combo. $500000
Progressive Slot: Progressive SlotA progressive slot is a slot that keep on growing its total possible winning pool; usually linked by a network of slots. It is also known as a jackpot.
Auto Play Feature: Auto Play FeatureAuto Play is a built-in function on the slot interface that enables automatic spinning of the slot without the player having to press the Spin button on every spin. Usually, the function can be preset to auto execute a certain number of spins like 20,50, 100, or more. Players can typically define their bet amount and set loss limits before starting Auto Play.
Bonus Buy Feature: Bonus Buy FeatureThis feature enables players to instantly pay for and access the special bonus feature of the slot instead of waiting for a lucky spin in a long spin sequence. This feature has proven to be quite popular among slot players.
Book of Feature: Book of FeatureThe Book of feature is a popular slot mechanic where a special symbol acts as both a scatter and a wild. When three or more Book symbols appear on the reels, they trigger a bonus round with free spins and an expanding symbol feature.
Free Spins Feature: Free Spins FeatureFree spins are the most popular feature in online slots today. Usually they are not just a free spinning on the usual gameplay of the slot but are bundled into separate and more exciting feature with special effects and much greater winning potential.
Available: Android, IOS, Windows

Pros

  • Expanding Symbols boost wins
  • Book symbol versatility
  • Buy Feature flexibility

Cons

  • High volatility swings
  • Few paylines (10)

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Expert’s Opinion

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The slot game Book of Diamonds delivers a refined mix of traditional fruit slot visuals and modern gameplay elements, making it a standout title in its category. The high volatility creates a tense, rewarding dynamic, with the chance for wins up to 5,000 times the stake keeping every spin engaging. The Book symbol, doubling as Wild and Scatter, simplifies the mechanics while boosting payout potential, especially during the Free Spins round where Expanding Symbols can dominate the reels. The Buy Feature is a smart addition for players eager to jump into the bonus action, though it demands a higher investment. On the flip side, the unpredictable win frequency due to volatility might frustrate some, requiring a tolerance for risk. It’s a well-executed slot that respects its roots while offering enough innovation to hold attention over extended play.

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Introduction to Book of Diamonds

Launched on July 7, 2020, Book of Diamonds by Spinomenal presents players with an engaging quest centered around precious gems and vibrant fruit symbols. This 5×3 reel slot, equipped with 10 paylines, delivers high volatility gameplay that keeps anticipation high with each spin. The game incorporates a variety of features such as Free Spins, a Scattered Wild, and Expanding Symbols, all enhancing the pursuit of rewards up to 5,000 times the total bet. Its vivid visuals and carefully crafted audio create an immersive atmosphere that draws players into a colorful chase for significant wins. Accessible across multiple platforms, this slot caters to a broad audience seeking a blend of classic themes and modern mechanics.

Book of Diamonds Slot Provider

Spinomenal Logo

Spinomenal

USA Rated 94.66/100%

459 Casinos | 339 Games

All Casinos
Number of games
339
Country
Malta
Founded
2014
  • Slots
  • Table Games
  • Tournaments

Spinomenal, an innovative force in slot development, hails from Israel and has been shaping the industry since its founding. Known for merging imaginative themes with advanced technology, the company produces games that stand out through unique mechanics and engaging bonus elements. Their portfolio reflects a dedication to quality, appealing to varied player tastes with offerings like Book of Diamonds. This title exemplifies Spinomenal’s skill in fusing traditional slot motifs with contemporary features, ensuring each release provides fresh entertainment. Their focus on player satisfaction and creative design positions them as a notable contributor to online gaming.

Book of Diamonds Slot Characteristic:

CharacteristicValue
Paylines10
RTP96.14%
Max Win5,000x
Bonus GameYes
Special SymbolsScattered Wild, Expanding Symbols
Paid Symbols9
Free SpinsYes
Reels5
Rows3
Slot Layout5×3
TechnologyHTML5
PlatformsMobile, Desktop, Tablet
Minimum Bet$0.10
Maximum Bet$100

Book of Diamonds Slot Gameplay and Mechanics

Built on a 5×3 reel framework with 10 fixed paylines, this slot offers a straightforward yet compelling structure suited for high volatility play. The Book symbol holds a dual role as both Wild and Scatter, substituting for other icons to complete wins and unlocking the Free Spins feature when three or more land. During this bonus phase, a randomly chosen Expanding Symbol can stretch across reels, amplifying the chances of substantial payouts. A Buy Feature provides an option to instantly access the Free Spins round, offering strategic flexibility. With potential rewards reaching 5,000 times the stake, the mechanics ensure a balance of anticipation and opportunity, keeping players invested in every spin.

Book of Diamonds Slot RTP

96-97 RTP RangeFeaturing a Return to Player rate of 96.14%, this slot positions itself as a solid option for those seeking a fair balance of risk and return. This percentage suggests that, over time, roughly 96.14% of wagered amounts are returned to players, aligning with its high volatility profile. Such a setup implies less frequent wins, but those that occur can carry considerable value, potentially reaching 5,000 times the bet. This RTP complements the game’s mechanics, offering a statistical foundation that supports its appeal for players aiming for notable rewards.

Book of Diamonds Slot Volatility

High volatility iconHigh volatility defines this slot, creating a gameplay pattern where wins may be sporadic yet carry the promise of substantial payouts. This characteristic suits players who favor the prospect of larger returns over frequent smaller gains, with the maximum win capped at 5,000 times the stake. The infrequency of wins heightens the stakes, making each spin a calculated moment of potential payoff. Effective bankroll management becomes key in navigating this setup, ensuring players can sustain play through quieter stretches while awaiting those high-impact results.

Book of Diamonds Slot Betting Range

Spanning from $0.10 to $100 per spin, the betting range in this slot accommodates a variety of player preferences, balancing accessibility with high-stake potential. Those with modest budgets can engage at the lower end, leveraging the game’s features without substantial risk, ideal for extended sessions. Conversely, players aiming for larger returns can opt for the upper limit, where the 5,000x maximum win becomes a tangible target, especially during bonus rounds. This broad spectrum ensures the game appeals to both cautious participants and those willing to wager more, providing flexibility to tailor each session to individual financial strategies and goals.

Book of Diamonds Slot Symbols Explained

The symbol set in this slot merges classic fruit machine icons with higher-value emblems, creating a balanced paytable. Cherries, lemons, oranges, plums, and melons serve as lower-tier symbols, offering modest returns for three or more matches. In contrast, the bar, bell, seven, and diamond symbols yield greater rewards, with the diamond topping the chart. The Book symbol functions as both Wild and Scatter, aiding in win formation and initiating Free Spins when three or more appear. Within the Free Spins round, an Expanding Symbol is selected, capable of covering reels to enhance payouts, adding depth to the gameplay and elevating the potential for significant wins.

Book of Diamonds Symbols

The symbols in Book of Diamonds fuse traditional slot imagery with modern mechanics, offering a mix of nostalgia and innovation as players pursue rewards across the reels.

x5 = 500x

x4 = 100x

x3 = 10x

x2 = 1x

x5 = 200x

x4 = 40x

x3 = 4x

x2 = 0.5x

x5 = 75x

x4 = 10x

x3 = 3x

x2 = 0.5x

x5 = 750

x4 = 10x

x3 = 3x

x2 = 0.5x

x5 = 15x

x4 = 4x

x3 = 0.5x

x5 = 15x

x4 = 4x

x3 = 0.5x

x5 = 10x

x4 = 2.5x

x3 = 0.5x

x5 = 10x

x4 = 2.5x

x3 = 0.5x

x5 = 10x

x4 = 2.5x

x3 = 0.5x

Book of Diamonds Slot Free Spins Round

Landing three or more Book Scatter symbols activates the Free Spins round, granting players 10 spins to pursue enhanced rewards. Prior to the round’s start, a symbol is randomly designated as the Expanding Symbol, capable of stretching across reels when sufficient instances appear, boosting win potential across paylines. This feature can yield significant returns, particularly if a high-value symbol like the diamond is selected. The possibility of retriggering additional spins by landing more Book symbols during the round extends playtime and heightens the chance for impressive outcomes, making this a pivotal element of the slot’s appeal.

Book of Diamonds Slot Features

setting
This slot includes several features that elevate its gameplay: the Book symbol acts as a Scattered Wild, substituting for others and triggering Free Spins; the Free Spins round offers 10 spins with an Expanding Symbol to increase win potential; and the Buy Feature allows instant entry into the bonus round. These elements combine to offer multiple paths to significant payouts, with the Expanding Symbol capable of transforming reel outcomes during spins. The Scattered Wild’s versatility adds strategic depth, while the Buy Feature caters to players seeking immediate action. Together, these mechanics create a layered and rewarding slot session.
Features and Descriptions:

FeatureDescription
Scattered WildBook symbol substitutes for others and triggers Free Spins.
Free Spins10 spins with an Expanding Symbol for enhanced wins.
Expanding SymbolsSelected symbol expands during Free Spins for larger payouts.
Buy FeaturePurchase direct access to Free Spins for instant bonus play.

Book of Diamonds Demo Version

Demo Version IconA demo version of this slot offers a valuable chance to test its mechanics without financial commitment. Players can assess the Free Spins feature, Expanding Symbols, and overall paytable in a risk-free setting, refining strategies before wagering real funds. Available for free on our site, this mode allows users to practice and evaluate the game’s flow, visuals, and sound, ensuring confidence in its functionality. It serves as an ideal starting point for understanding how the slot operates, making it a practical tool for preparation.

Book of Diamonds Slot Compatible Devices

Leveraging HTML5 technology, this slot ensures seamless performance across desktops, tablets, and smartphones, adapting effortlessly to different screen sizes. Players can engage with its vivid graphics and features whether stationed at home or moving about, maintaining consistent quality on all platforms. The mobile rendition preserves every aspect of the desktop version, from the Free Spins round to the Expanding Symbols, offering uninterrupted access to its full range of mechanics. This adaptability broadens its reach, catering to varied preferences and schedules without compromising the slot’s visual or functional integrity.

Frequently Asked Questions (FAQs)

These questions address common inquiries about Book of Diamonds Slot, providing clear and concise insights for players.

What is the RTP of Book of Diamonds?

Book of Diamonds has an RTP of 96.14%, meaning players can anticipate a return of about 96.14% of their total bets over an extended period. This rate is competitive, aligning with the slot’s high volatility, which offers fewer but potentially larger wins. It provides a balanced statistical backdrop for those seeking notable payouts.

What is the maximum win in Book of Diamonds?

The maximum win in this slot reaches 5,000 times the total bet, achievable through features like Free Spins with Expanding Symbols. This high ceiling appeals to players chasing significant rewards. Its high volatility supports the potential for such substantial outcomes, despite less frequent wins.

How many paylines does Book of Diamonds have?

This slot includes 10 fixed paylines, offering multiple avenues for winning combinations across its 5×3 reel layout. The fixed nature ensures all lines are active each spin, simplifying strategy. It provides a solid foundation for engaging gameplay.

Does Book of Diamonds Slot Offer a Free Spins Round?

Yes, landing three or more Book Scatter symbols triggers a Free Spins round with 10 spins. An Expanding Symbol enhances payout potential during this phase, often leading to significant wins. It’s a core feature that elevates the slot’s appeal.

Can I play Book of Diamonds on my mobile device?

Built with HTML5, this slot performs seamlessly on mobile devices like smartphones and tablets. It retains all features and visuals from the desktop version, ensuring quality play on the go. Compatibility extends across various platforms effortlessly.

Is there a demo version available for Book of Diamonds?

A demo version is available on our site, allowing free play to test features like Free Spins and Expanding Symbols. It’s an effective way to practice and assess the game without risk. This mode prepares players for real-money sessions.

What are the betting limits in Book of Diamonds?

Betting limits range from $0.10 to $100 per spin, catering to both conservative and high-stake players. This flexibility accommodates different budget levels and strategies. It allows tailored gameplay aligned with individual goals.

What features does Book of Diamonds offer?

The slot features a Scattered Wild, Free Spins with Expanding Symbols, and a Buy Feature for instant bonus access. These elements enhance win potential and add strategic layers to play. They combine to create a multifaceted slot session.

Where can I play Book of Diamonds?

Our site lists the best casinos to play this slot, featuring Spinomenal titles with secure environments. These platforms ensure quality and safety for players. It’s a reliable starting point for accessing the game.

What is the volatility level of Book of Diamonds?

High volatility characterizes this slot, meaning wins are less frequent but can be substantial when they occur. This suits players aiming for larger payouts, up to 5,000x the bet. It requires patience and strategic planning.

What symbols should I look out for in Book of Diamonds?

Key symbols include the Book (Scattered Wild), diamond (top payer), seven, bell, and bar, alongside fruit icons. The Book triggers Free Spins and aids wins, while the diamond offers high returns. Expanding Symbols in Free Spins amplify payout potential.

Concluding Thoughts

Book of Diamonds delivers a visually rich slot with high volatility and a robust feature set, appealing to players seeking sizable rewards. Its potential for a 5,000x payout, driven by Free Spins, Expanding Symbols, and the Buy Feature, keeps gameplay engaging and varied. The fusion of classic fruit themes with modern mechanics offers a fresh take on a familiar format. This slot stands as a strong option for those drawn to strategic play and the prospect of significant wins, enhanced by its polished design and adaptable platform support.

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