Book of Monsters Slot by Pragmatic Play

Last Updated on April 15, 2025

Monsters on the reels? Or potentially monstrous payouts once you spin the reels? It’s the question we’ll answer once we play and enjoy Pragmatic Play’s new slot production, the Book of Monsters. Book of Monsters by Pragmatic Play is a fun and colourful slot machine that will remind players of the Monster Inc movies and their lovable characters. Instead of scary monsters as paying symbols, this slot relies on playful characters to bring huge cluster wins. There’s a Free Spins mode, a Gamble option for a chance at higher payouts, and a Bonus Buy option. Pragmatic Play’s Book of Monsters is highly volatile with an RTP of 96.5%, and promising a top payout of up to 5,000x the bet!

Meet the playful monsters

Book of Monsters uses a 7×7 grid and works using the cluster pays win mechanic, where payouts happen when landing at least 5 matching symbols that are adjacent to each other. This slot machine is fairly straightforward, and there are no special mechanics or features that can complicate your betting adventure. Bets start at 0.20 up to 240.00, with an Ante Bet option where you can double your bet per spin.

For the game’s low-pays, you can see card ranks and suits, offering payouts between 0.2 to 2x the bet. For the game’s high-paying monsters, you can win anywhere from 100x to 5,000x the bet if you match all 49 symbols. This slot doesn’t pack the Wilds, but there’s a chance to land the fat symbols randomly, in various sizes from 3×3 to 7×7!

Monstrous free spins

Instead of Wilds, players must watch out for the Scatters, which trigger the game’s bonus round. Landing 4,5, 6, or 7 scatters will trigger 5,6, 7, or 8 bonus spins. Before the start of the bonus round, players have the option to gamble the free spins for an extra 8 spins or lose them all. During this round, a random paying symbol is selected as a Fat symbol.

There’s a progressive feature involving the fat symbol. At the beginning of the spins, the 1×1 fat symbol appears and moves to a new position. Then, this can grow in size, up to 7×7 for bigger wins. Also, this slot machine boasts a Bonus Buy option at 100x the bet. 

The game’s features are pretty standard, and this doesn’t pack the usual Wilds or huge multipliers. Instead, it relies on the free spins, fat symbols, gamble option, and a top payout of up to 5,000x the bet. Play this new Pragmatic Play slot machine at Luckster Casino and see what the monsters can offer you!