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Merlin’s Grimoire Slot

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Our rating:
  • A well-designed game from PlayNGo with a twist
  • Familiar ‘book of’ feature and lots of ways to win
  • Huge payouts up to an impressive 35,000x

Merlin’s Grimoire slot from PlayNGo is another game based on the folklore around Merlin and King Arthur. We’ve seen this developer use the theme a number of times, and I have no complaints because it looks great and it’s quite interesting, still standing out from many of the other overused themes out there. Set in a mysterious forest, you have 5 reels and 3 rows, but the number of ways to win can change thanks to splitting symbols as we’ll soon see. Just try to get a winning combination using the following base symbols, ranked in ascending order:

  • Green, Blue or Purple Rune
  • Brown, Red or Yellow Rune
  • Scroll or Potion
  • Staff
  • Merlin

In addition to these regular symbols, there’s a wild scatter symbol also. This substitutes for all other symbols in a winning combination, and is also used to trigger the free spins bonus. It’s shown as the grimoire.

merlins grimoire slot gameplay


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Merlin’s Grimoire Slot Bonuses and Features

Splitting Symbols. This game has lots of splitting symbols, and these are used to get you lots more ways to win and hence, more payouts. Splitting symbols occur on reels 1, 2 or 3 when they are activated, and this splits all symbols on those reels into 2.

Free Spins Bonus. For this you’ll need 3, 4 or 5 wild scatters anywhere in view. You always get 10 free spins, but depending on the number of scatters you also get a 0.8x, 1.6x or 4x stake rewards. Not much I know. Before the spins play out, a special symbol is chosen to expand whenever it lands, filling the entire reel if it creates a win. Better still, it doesn’t need to be adjacent to other symbols to make that win. Additionally, all reels during the bonus can be activated, meaning you can get more split symbols and up to 7,776 ways to win.

merlins grimoire slot rules


Merlin’s Grimoire slot from PlayNGo is another book of slot with a twist, this time from the developer that actually brought you book of as well. In addition to the special expanding symbols, you have splitting symbols that make this game stand out, giving you up to 3 reels with splitting symbols in the base game and all 5 during the free spins bonus. This is a nice touch, because not only does it make things more interesting but it means payouts can be up to a massive 35,000x your stake, one of the highest we’ve seen from this developer. Thanks to this, it’s definitely a slot you’ll want to check out and I hope to see more from PlayNGo with these kinds of rewards.

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Big Payouts With Lots Of Ways To Win





  • Huge payout potential.
  • Good twist on 'book of' feature.
  • Great design.


  • Simple design.
  • Nothing new.

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