Book of Monsters: Slot Overview
Although 'Book of Monsters' might conjure images of magical libraries like those at Hogwarts, it's crafted by the imaginative minds of a software developer. Pragmatic Play \"s Book of Monsters is actually a cluster-paying grid slot The game diverges from traditional 'Book of' slots by not expanding special symbols across the reels; instead, books open to unveil free spins and random symbols that can expand during bonus rounds, reflecting a slightly different mechanism. Fat Rabbit than a Book of Dead .
While the slot may revolve around monsters, these creatures are not the malevolent beings of bedtime tales. Instead, they present themselves with playful, cheeky grins reminiscent of Reactoonz characters, set in a dim cave illuminated by spectral light shifting from blue to orange during free spins, where much of the game's excitement unfolds.

Set on a 7x7 playing field, the Book of Monsters slot uses a cluster pay system, achieving wins when clusters of at least five identical symbols connect vertically or horizontally. The base game features minimal special actions, letting players opt to buy into the bonus round or utilize the ante bet to enhance the chance of landing free spins by seven times. Bets can range from 20 cents to $/€240, doubling if the ante bet is chosen. Its high volatility is worth noting. RTP for all options is 96.5% .
On the reels, lower-value symbols blend playing card motifs, like the jack of diamonds and ace of spades, with unique colors, such as purple, green, and red monsters. Winning clusters of five identical symbols offer payouts from 0.2 times to 2 times the player's stake, reaching as high as 100x to 5,000x for clusters as large as 49 symbols. Although lacking wild symbols, the game randomly deploys 'fat symbols' of varying sizes during the base game for added excitement.
Book of Monsters: Slot Features

By landing 4 to 7 scatter symbols, players can earn between 5 to 8 free spins in the base game. When the ante bet is active, 3 to 7 scatters also grant additional free spins.
In the bonus round, one pay symbol is randomly selected as the 'Fat symbol,' and players can opt to gamble for a more lucrative option. Another gambling choice available is to increase free spins or accept the feature as it is. If players choose to gamble for either and the 'The End' message appears, the feature ends. Otherwise, successful gambles may yield up to 8 free spins and potentially upgrade the symbol.
The free spins feature includes a progressive element linked to the Fat symbol. Starting with a 1x1 symbol on the grid, it moves with each spin. Non-overlapping symbols of the same type collected by a meter result in growth. Accumulating symbols increases the Fat symbol's size, granting additional free spins at certain intervals.
Bonus Buy
The free spins bonus can be bought From a base game position, purchasing access to the bonus round costs 100x the original bet, ensuring between 4 and 7 scatters land during a triggering spin.

Book of Monsters: Slot Verdict
Initially, one might assume the Book of Monsters follows slot norms like Book of Dead with expanding symbols, but playing reveals a unique game. It draws parallels to TV clip shows by compiling various familiar components in new ways, making it stand out.
The mention of 'Book of' hints at thematic connections, but the game focuses on granting free spins and selecting unique symbols. Starting with only 5 free spins can encourage players to gamble for more or for a more valuable Fat symbol. Though not wild, strategically increasing the symbol could hold its advantages.
Not having a multiplier feature like Royal Potato Though lacking a growing wild feature like Fat Rabbit, it offers a thrilling maximum payout up to 5,000 times the stake, syncing with a rare 1 in 547,945 occurrence rate. It combines familiar and distinct elements, making the growing Fat symbol an entertaining spectacle despite a somewhat basic base game.
In Short
Book of Monsters stands out with its blend of familiar features and unexpected twists, warranting a closer inspection.
(1 = worst / 10 = best)