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Play Merlin’s Grimoire Slot Demo – (Free Game) & Review

Merlin’s Grimoire is one of many Book-style slot machines that you’re going to find at online casinos. The term Grimoire refers to a book of magic, one where you’d find spells and instructions on how to summon creatures or create amulets, among other things. It fits right in with the rest of the Book slots, since they all share the same connection to the supernatural at some level. The graphics are superb in this case, above average for this category, and of course there is a connection to the legend of King Arthur since there is a mention of Merlin.

The Grimoire is going to be a major symbol, but there are also others with Merlin, Crystal Staff, Potion, Scroll, and half a dozen coins/amulets with various magical signs on them.


The developer behind Merlin’s Grimoire is called Play n GO. The company’s collection of games is well known, and appreciated, with a number of other excellent options in the Book category. The things that you typically get from every single game of theirs, is an above average design and good features.

Basic Information

Play'n Go
up to 7776
Free Spins
Wild Symbol
Special Bonus Game
Online & Mobile
Merlin’s Grimoire screenshot 1
Merlin’s Grimoire screenshot 2

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How To Play the Merlin’s Grimoire Slot Game

A wager that’s placed in Merlin’s Grimoire starts from a minimum of £0.10, and could go as high as £100.

5×3 reels spin in this case, and there are 243 ways to win that you get usually. With the Splitting Symbols that can get involved, you could end up with 7,776 ways to win (5 reels with 6 symbols each, during free spins).

Here I am playing Merlin’s Grimoire:

Special Features

The Splitting Symbols mechanic is one that applies only to the middle three reels. These can end up with 6 symbols instead of 3 on each one, and this obviously adds to the number of ways to win. The Split occurs at random, so one spin you might get only one reel with extra symbols, while in others you could get more. You can also play without any split symbols, since it’s entirely random.

Besides the unusual mechanics that were implemented in Merlin’s Grimoire, there are also some that feel common. The Grimoire, or the Book if you will, is one of them. This is both the wild and the scatter symbol. While helpful as a replacement, you mostly want from it to appear 3+ times, to trigger the free spins.

During free spins, you are going to get an expanding symbol, which is selected at the start. All reels are now able to symbol split, so the potential of the game goes up tremendously. While the individual wins are low, only 4x the stake for the best one, you do get up to 7,776 ways to win in total.

Maximum Payouts

When everything goes right, and you’re in free spins mode, a top jackpot of up to 35,000x the stake is a possibility. This goes way beyond what you’d expect to see from a typical Book slot.

However, you can still expect Merlin’s Grimoire to be highly volatile, same as every other game we’ve seen in this huge category.

As with most Play n GO slots, there is an RTP range, whose only good value is the top one, of 96.20%. The other four drop down to 94.20%, and further, with the bottom at 84.20%. It’s a good idea to double-check the RTP that’s being used at your favorite casino.


Merlin’s Grimoire is an excellent addition to the Book category. It keeps the most important features of the genre, but it uses ways to win and splitting symbols, with the end result being an impressive jackpot of 35,000x the stake. I’d definitely give this a try, as a fan of Book slots.

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