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Merlin’s Grimoire Review

Joe Napier
October 14, 2026
Merlin’s Grimoire

Release Date

Jul 7, 2022

Provider

Play'n GO

RTP

96.2%

Volatility

High

Max Win

30,000x

Hit Frequency

27.0%

Min Bet

0.1

Max Bet

100

Merlin’s Grimoire is an Arthurian fantasy-themed online slot from Play’n GO, released on 7 July 2022. Inspired by the legendary wizard Merlin, the game features five reels with between three and six rows, offering 243 to 7,776 ways to win. Its highest reported RTP is 96.20%, while its high-volatility mathematical profile and maximum payout of 30,000x the stake make it a slot with substantial theoretical winning potential. Free Spins and variable reel heights add further variety to its medieval fantasy setting. Players should check the available RTP before playing at a UKGC-licensed casino.

Casinos Where You Can Play Merlin’s Grimoire in the UK

Merlin’s Grimoire Key Facts

FeatureDetails
ProviderPlay’n GO
Release Date7 July 2022
ThemeArthurian Legend / Fantasy
Reels & Rows5 reels, 3–6 rows
Paylines / Ways243–7,776 ways to win
Highest Reported RTP96.20%
Alternative RTPsNot verified
VolatilityHigh to Very High (sources differ)
Minimum Bet0.10
Maximum Bet100 (international range)
Maximum Win30,000x stake
Hit FrequencyNot available

RTP Variation Warning: Alternative RTP configurations were not established from the supplied sources. Players should check the exact version available at their casino rather than assuming that every operator offers the highest reported RTP.

UKGC Banned Features: Check UK-regulated versions of Merlin’s Grimoire must comply with UKGC restrictions on autoplay, turbo-spin functionality and bonus-buy mechanics.

Stake Limit Compliance: UK online slot stakes are limited to £5 per spin for players aged 25 and over and £2 per spin for players aged 18–24. The game’s international betting range of 0.10–100 does not override these restrictions.

Responsible Gambling Integration: Merlin’s Grimoire has a high to very high volatility classification across third-party sources, meaning significant payouts may be separated by extended losing sequences. Players should set a spending limit, avoid chasing losses and remember that Free Spins do not guarantee a profit.

Fairness & RNG Certification: Games offered by UKGC-licensed casinos must comply with applicable technical standards for fairness and random outcomes. Specific independent testing certificates for Merlin’s Grimoire were not established from the supplied information.

First Impressions: Theme, Graphics & Sound

Merlin’s Grimoire draws inspiration from Arthurian legend, using medieval fantasy imagery and magical symbolism to create an atmospheric playing environment. The theme centres on Merlin and the mysterious world of spells, enchanted objects and ancient knowledge.

The five-reel structure offers visual variety as the number of rows changes, while the fantasy setting provides a recognisable backdrop for the game’s expanding winning ways. Its presentation is particularly suited to players who enjoy wizard-themed slots and medieval adventures.

Base Game Mechanics & Payouts

Merlin’s Grimoire features five reels with between three and six rows, offering 243 to 7,776 ways to win.

Winning combinations are formed according to the game’s ways-to-win system rather than traditional fixed paylines. As the reel heights increase, additional symbol positions become available, creating more potential winning combinations.

The game carries a high-volatility profile, with the theoretical maximum payout reaching 30,000x the stake. However, the frequency and size of individual wins are determined by the game’s underlying mathematical model.

Merlin’s Grimoire Bonus Features

Expanding Ways to Win Merlin’s Grimoire features a variable reel structure that offers between 243 and 7,776 ways to win. As additional symbol positions become available, the number of potential winning combinations increases across the five reels.

Free Spins Feature Third-party game information lists a Free Spins feature beginning with ten spins and the possibility of additional spins. The precise triggering conditions and retrigger rules should be confirmed through the game’s official paytable.

High-Volatility Gameplay Merlin’s Grimoire is classified as high volatility by Bigwinboard and AboutSlots, while Online-Slot.co.uk describes it as very high. This profile means larger payouts are theoretically possible, but results can be unpredictable and extended losing sequences may occur.

Maximum Winning Potential Merlin’s Grimoire offers a maximum theoretical payout of 30,000x the stake according to Bigwinboard and AboutSlots. One third-party source reports 31,104x, creating a discrepancy that should be checked against the official game rules before publication.

How Does Merlin’s Grimoire Compare to Other Slots?

FeatureMerlin’s Grimoire
Traditional Five-Reel Slot
Layout5 reels, 3–6 rowsUsually fixed
Winning Ways243–7,776Varies
Highest Reported RTP96.20%Varies
VolatilityHigh / Very HighVaries
Maximum Win30,000x (two sources)Varies
Main DifferenceVariable reel heightsConventional fixed layout

Verdict: Merlin’s Grimoire stands out for its flexible reel structure and substantial maximum payout. Its high-volatility mathematical profile may appeal to players who prefer games with considerable theoretical winning potential, although it is less suitable for those seeking frequent smaller payouts.

From the Player’s Mouth: Real Experiences & Expert Advice

Player Sentiment: Merlin’s Grimoire combines a familiar Arthurian fantasy theme with a variable reel structure and a sizeable theoretical maximum win. Its 243–7,776 ways to win add variety to the gameplay, while the 96.20% highest reported RTP provides a useful benchmark when comparing available casino versions.

Expert Tips for Volatility

  • Tip 1: Check the in-game paytable to understand how reel heights change and how winning combinations are formed.
  • Tip 2: Use a consistent stake and predetermined spending limit to manage the game’s high volatility.
  • Tip 3: Avoid extending sessions solely to trigger Free Spins or reach the maximum reel configuration. Every spin is independently determined, and longer play does not guarantee larger payouts.

Mobile Performance

Merlin’s Grimoire’s five-reel format and fantasy-inspired presentation are suitable for compatible mobile devices. The variable reel structure remains central to the experience, although actual performance and availability depend on the casino platform, browser and device.

Merlin’s Grimoire Pros & Cons

Pros

  • Highest reported RTP of 96.20%
  • Arthurian fantasy theme
  • Up to 7,776 ways to win
  • Variable reel heights
  • Free Spins feature reported by third-party sources
  • Maximum theoretical payout of 30,000x stake

Cons

  • High volatility may not suit every player
  • Maximum win discrepancy between sources
  • Alternative RTP configurations remain unverified
  • Exact Free Spins rules require in-game verification
  • Larger payouts are not guaranteed

Is Merlin’s Grimoire Worth Your Time & Money?

Merlin’s Grimoire combines an atmospheric Arthurian setting with 243–7,776 ways to win, high volatility and a substantial maximum payout of 30,000x the stake. Its changing reel heights and fantasy presentation offer an interesting alternative to conventional five-reel slots.

Players who enjoy wizard-themed games and high-volatility mathematical profiles may find Merlin’s Grimoire worth exploring at a UKGC-licensed casino. However, the maximum-win discrepancy between third-party sources should be resolved before treating the payout figure as provider-confirmed.

Merlin’s Grimoire Frequently Asked Questions

Who developed Merlin’s Grimoire?

Merlin’s Grimoire was developed by Play’n GO and released on 7 July 2022.

What is the RTP of Merlin’s Grimoire?

The highest reported RTP is 96.20%. Players should check the exact configuration available at their casino.

How many ways to win does Merlin’s Grimoire offer?

Merlin’s Grimoire offers between 243 and 7,776 ways to win.

What is the maximum win in Merlin’s Grimoire?

Bigwinboard and AboutSlots report a maximum payout of 30,000x the stake, while Online-Slot.co.uk lists 31,104x. The official game rules should be consulted to resolve this discrepancy.

Game Type

Video Slot

Game Features

Free Spins Split Symbols Wild Symbols

Technical Details

Layout

5x3

Paylines

7776

Bet Range

€0.1 - €100