Fruit Party 2
Pragmatic Play
RTP 96.53% High Volatility
▶ Play Demo
Book of Monsters
If you're drawn to the thrill of high-stakes adventure and classic slot mechanics with a monstrous twist, then Book of Monsters by Pragmatic Play is a title you need to check out.
Book of Monsters facts
- RTP
- 95.5%
- Volatility
- Medium
- Reels
- 7
- Paylines
- Fixed
- Max win
- 5,000×
- Bet range
- 0.2 – 480
- Max win per spin
- 5,000 at max bet
- Released
- Game type
- Slots
- Provider
- Pragmatic Play
RTP varies by casino. Studios release the same slot in more than one RTP build and each casino picks which one it runs, so check the RTP in this game's own info screen at the casino where you play.
Facts from the SlotsLaunch games feed, last synced 6 Sep 2026. The rules inside the game take precedence.
Book of Monsters paytable and rules
Recorded from Book of Monsters's own information screens while the game ran in demo mode at a licensed casino, 7 September 2026. Symbol values appear exactly as the game prints them, which below means cash amounts at a $2.00 spin. A casino can run a different build of a slot, so check the game's own info screen where you play.
| Symbol | 49 | 40-48 | 31-39 | 28-30 | 21-27 | 17-20 | 13-16 | 9-12 | 8 | 7 | 6 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| red one-eyed monster | $10,000.00 | $1,000.00 | $400.00 | $200.00 | $120.00 | $80.00 | $50.00 | $30.00 | $20.00 | $12.00 | $8.00 | $4.00 |
| green monster | $1,000.00 | $500.00 | $200.00 | $100.00 | $60.00 | $40.00 | $25.00 | $15.00 | $10.00 | $6.00 | $4.00 | $2.00 |
| purple monster | $500.00 | $250.00 | $100.00 | $50.00 | $30.00 | $20.00 | $12.50 | $7.50 | $5.00 | $3.00 | $2.00 | $1.00 |
| A | $400.00 | $200.00 | $80.00 | $40.00 | $24.00 | $16.00 | $10.00 | $6.00 | $4.00 | $2.50 | $1.50 | $0.80 |
| K | $300.00 | $150.00 | $60.00 | $30.00 | $18.00 | $12.00 | $7.50 | $5.00 | $3.00 | $2.00 | $1.20 | $0.60 |
| Q | $250.00 | $125.00 | $50.00 | $25.00 | $15.00 | $10.00 | $6.00 | $4.00 | $2.50 | $1.50 | $1.00 | $0.50 |
| J | $200.00 | $100.00 | $40.00 | $20.00 | $12.00 | $8.00 | $5.00 | $3.00 | $2.00 | $1.20 | $0.80 | $0.40 |
| BONUSBonus | $200.00 | $100.00 | $30.00 |
How Book of Monsters's special symbols work
- BONUS
- This is the BONUS symbol.
Book of Monsters features
- FREE SPINS
- Hit 4, 5, 6 or 7 BONUS symbols to trigger the FREE SPINS feature and win 5, 6, 7 or 8 free spins respectively. First, a random paying symbol is selected to be the FAT symbol for the subsequent FREE SPINS round. Before the round starts you can gamble separately to increase the value of the FAT symbol selected to the next higher value one or to increase the amount of free spins for the subsequent round. You can also collect the current FAT symbol and amount of free spins and start the round at any time. If you choose to gamble for the FAT symbol, a book's pages turn and the next higher value symbol is revealed or "THE END" is shown. If the symbol is revealed, the gamble is won and the FAT symbol for the subsequent round is changed to the new one. If "THE END" is revealed, the gamble is lost and the round ends. If you choose to gamble for additional free spins, a book's pages turn and the next amount of free spins is revealed or "THE END" is shown. If the amount of free spins is revealed, the gamble is won and the amount of free spins for the subsequent round is changed to the new one. If "THE END" is revealed, the gamble is lost and the round ends. The chance to win any of the gamble options depends on the current amount of free spins, the current FAT symbol and which gamble option is selected. The chances are written in the game under the respective gamble buttons. It can only be gambled up to 8 free spins or the highest value symbol in the game as the FAT symbol. The FREE SPINS round starts when you choose to collect the current amount of free spins and the current FAT symbol or when the maximum gambles have been reached.
- FREE SPINS progressive feature
- The FREE SPINS round has a progressive feature. When the round starts, a 1x1 FAT symbol is always present on the screen, moving to a random position at every spin. All the instances of the symbol that was selected as the FAT symbol for this round that hit during the round and are not overlapped by the FAT symbol itself, are collected in a meter and when certain thresholds of collected symbols are reached, the FAT symbols grows in size: Collect 30 to level up the FAT symbol size to 2x2. Collect 27 more to level up the FAT symbol size to 3x3. Collect 24 more to level up the FAT symbol size to 4x4. Collect 20 more to level up the FAT symbol size to 5x5. Collect 16 more to level up the FAT symbol size to 6x6. Collect 12 more to level up the FAT symbol size to 7x7. Every time the symbol FAT symbol size increases 1, 2 or 3 additional free spins are randomly awarded. Special reels are in play during the feature.
- ANTE BET
- The player has the option to select the bet multiplier. Depending on the selected bet, the game behaves differently. The possible values are: Bet multiplier 40x - Hit 3, 4, 5, 6 or 7 BONUS symbols to trigger the FREE SPINS feature and win 4, 5, 6, 7 or 8 free spins respectively. Because the feature triggers with a minimum of 3 BONUS symbols instead of a minimum of 4, the chance to hit it naturally is seven times higher. The BUY FREE SPINS feature is disabled. Bet multiplier 20x - Normal play.
Book of Monsters rules, as the game states them
All symbols pay in blocks of minimum 5 symbols connected horizontally or vertically.
The game is played on a 7x7 grid of symbols.
During base game, at any spin, symbols of 3x3, 4x4, 5x5, 6x6 or 7x7 can hit randomly.
Medium volatility games pay out steadily and the range of pays varies from low to very high.
Only the highest win is paid per winning combination.
When winning with multiple blocks all wins are added to the total win.
Free spins and bonus wins are added to the payline win.
All wins are multiplied by base bet.
All values are expressed as actual wins in coins.
Free spins win is awarded to the player after the round completes.
Free spins total win in the history contains the whole win of the cycle.
SPACE and ENTER buttons on the keyboard can be used to start and stop the spin.
Malfunction voids all pays and plays.
The maximum win amount is limited to 5000X bet. If the total win of a round reaches 5000X bet the round immediately ends, win is awarded up to the cap and all remaining features are forfeited.
p06.png: HOW TO PLAY / MAIN GAME INTERFACE control instructions, no paytable data.
p08.png: AUTOPLAY control instructions, no paytable data.
Free Demo
Book of Monsters
by Pragmatic Play
18+ | T&Cs Apply | Gamble Responsibly
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Slot Review
Book of Monsters Overview
Book of Monsters is a medium volatility slot by Pragmatic Play with an RTP of 95.5% . This game features Fixed paylines across 7 reels. Play Book of Monsters for free on Slottomat, compare the core stats quickly, and browse trusted slot offers available in your market.
Book of Monsters: A Pragmatic Play Adventure into the Dark
Game Overview and Theme
Step into a gothic study where ancient lore meets otherworldly terror. Book of Monsters presents a 5x3 grid set against a haunting backdrop of a mysterious library. The symbols are a mix of classic card royals (10-A) styled with a gothic font and the main monster characters: a Vampire, a Mummy, a Witch, a Frankenstein's monster, and a Werewolf. The visual and audio design is atmospheric, with eerie sound effects and suspenseful music that builds during spins and features. The game’s atmosphere is dark yet cartoonish, making it accessible rather than outright frightening. The titular Book acts as both the Wild and Scatter symbol, central to unlocking the game's most lucrative potential.
Betting Range and Technical Details
Book of Monsters offers a wide betting range suitable for all types of players, from cautious explorers to high-rolling monster hunters. You can spin the reels for as little as $0.20 or go all the way up to a maximum bet of $480 per spin, making it a versatile choice. The game operates on a fixed 10-payline system, meaning all lines are active on every spin. The key technical specs to remember are its very high volatility and 95.5% RTP. The high volatility means wins can be less frequent but have the potential to be significantly larger when they land, a hallmark of the "Book of" genre. This setup demands a patient balance strategy, as the game is built for those chasing substantial bonus round payouts.
Symbols, Payouts, and Base Game Features
In the base game of Book of Monsters, your goal is to land matching symbols on adjacent reels starting from the leftmost reel. The high-value symbols are the five monsters, with the Vampire being the most rewarding. The Book symbol is the star of the show. It substitutes for all other symbols to help form winning combinations. More importantly, landing three or more Book Scatters anywhere on the reels triggers the highly anticipated Free Spins feature. Before the free spins begin, one regular paying symbol is randomly chosen to become a special expanding symbol for the duration of the bonus round, a mechanic that defines this popular slot series.
The Free Spins Bonus Round
This is where Book of Monsters truly comes to life and where its very high volatility is most apparent. Triggering the feature awards 10 free spins. The special expanding symbol, chosen at random before the round starts, can be any of the monster symbols or the card symbols. When this chosen symbol lands in sufficient numbers to form a win (2 or more on a line), it expands to cover the entire reel, potentially creating massive wins across multiple paylines. If you land three or more Book Scatters during the free spins, you retrigger an additional 10 free spins. The potential for full-screen expansions of a high-paying monster symbol is what creates the game's maximum win potential.
Walking Wilds and Other Mechanics
While Book of Monsters does not feature a traditional Walking Wilds mechanic, its expanding symbol in the free spins round serves a similar, powerful purpose. The expansion transforms a standard symbol into a reel-covering wild, dramatically enhancing the win potential for that spin. For players who enjoy dynamic, transforming symbols that alter the grid, this is a core appeal. To understand more about how different symbol mechanics work across various slots, you can explore our detailed guide on Slot Symbol Mechanics.
Strategy and Playing the Demo
Given the very high volatility of Book of Monsters, a sound strategy is crucial. The demo version at Slottomat is the perfect training ground. Use it to familiarize yourself with the game's pace and frequency of bonus triggers without any risk. Since the big wins are almost exclusively tied to the free spins round with expanding symbols, your strategy should focus on balance management. Be prepared for periods of smaller wins or non-winning spins while waiting for the bonus feature. The wide betting range allows you to adjust your stake according to your budget, but patience is the ultimate key to surviving the hunt.
How It Compares to Other Pragmatic Play Slots
Pragmatic Play has a massive portfolio of high-quality slots. Book of Monsters sits firmly within their successful "Book of" series, sharing DNA with titles like John Hunter and the Secrets of Da Vinci's Treasure. If you enjoy the high-volatility, bonus-focused gameplay but prefer brighter themes, you might like the explosive potential of Mining Rush or the cluster-pays frenzy of Big Coin Bonanza. For something with a lively party atmosphere and different features, check out Gold Party 2 - After Hours. Fans of Latin American vibes and smaller grids might enjoy the compact fun of Tucanito.
Provider Showdown: Pragmatic Play's Place
Pragmatic Play has established itself as a dominant force in the online casino world, known for high-volume production and consistently engaging mechanics. While Book of Monsters showcases their skill with a proven formula, the industry is full of innovation from other giants. To see how different leading developers stack up against each other in terms of style and innovation, you can read our comparative analysis in NetEnt Innovation vs Microgaming Legacy: 2026 Casino Provider Showdown.
Final Verdict on Book of Monsters
Book of Monsters is a solid, if somewhat traditional, entry in the crowded "Book of" genre. Pragmatic Play executes the formula competently, offering a polished experience with clear visuals and the intense, high-volatility gameplay that fans expect. The 95.5% RTP is slightly below the current average, which is a consideration for seasoned players. However, the potential for large wins during the free spins round remains the main attraction. It may not reinvent the wheel, but for players seeking a reliably thrilling monster-themed adventure with classic expanding symbol mechanics, this slot delivers exactly what it promises.
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FAQ
Common Questions About Book of Monsters
Direct answers to the questions players usually ask before trying a slot.
The Book of Monsters slot has an RTP of 95.5% and is classified as a medium volatility game. Medium volatility games pay out steadily and the range of pays varies from low to very high.
Yes, you can try the Book of Monsters demo version for free play. This allows you to experience the game at your own pace.
The Book of Monsters slot was developed by Pragmatic Play. It is a medium volatility game with an RTP of 95.5%.
Yes, like most Pragmatic Play slots, Book of Monsters is optimized for mobile play. You can enjoy the free demo on smartphones and tablets.
Hit 4, 5, 6 or 7 BONUS symbols to trigger the FREE SPINS feature and win 5, 6, 7 or 8 free spins respectively. First, a random paying symbol is selected to be the FAT symbol for the subsequent FREE SPINS round.
When the round starts, a 1x1 FAT symbol is always present on the screen, moving to a random position at every spin, and it grows in size as instances of the selected symbol are collected in a meter. Every time the FAT symbol size increases, 1, 2 or 3 additional free spins are randomly awarded.
The bet range for this Pragmatic Play slot is from 0.2 to 480 credits.
