Golden Grimoire Online Slot Game Review

min read
BetMGM Jun 19, 2024, 3:33 PM

Golden Grimoire is a magic-themed online casino slot with a few tricks up its proverbial sleeve. A grimoire is a book of spells, usually owned by a sorcerer or wizard, that contains spells and rituals, information on magical objects like talismans and amulets, and invocations for supernatural entities like spirits and deities.

This mystical online casino game (developed by NetEnt) transports players to a realm of magic and wonder. Mesmerizing emblems and enchanting symbol transformation put players in the wizard’s seat while they try to conjure up a lucky streak and, hopefully, some miraculous wins. 

Read on as we review Golden Grimoire and see what it has on offer.

Game overview

This 5x4 reel online slot machine has 20 fixed paylines and an RTP (return to player) of 96.44%, which is in the medium to high range for online slots. It has a low variance, which means you can expect small but fairly frequent payouts. This also means this slot is suitable for any bankroll, rather than just for high rollers.

There are a number of features and bonuses, including free spins, mystery symbols (which also double as sticky symbols) and an active wild symbol, which helps players form winning combinations on the reels. We’ll explore these features in greater depth in the “features and bonuses” section below.

The charm of this game is definitely in the graphics, details, and visual storytelling. NetEnt has done a great job of creating an immersive experience for players, with floating symbols and creative animations that make you feel as if you're in the scene.

How to play

Golden Grimoire online slot game screenshot

Symbols on the reels include the low-paying card suits – clubs, diamonds, hearts, and spades. Though these are common in online slots, making them fairly mundane, they appear stacked at all times and have colorful backlit hues, giving them a magical feel.

High-value symbols feature various colored gem amulets. These include a purple gem held by a gold scarab worth 5 to 30x the wagers, a blue gem held by a golden snake worth 5 to 40x, a green gem held by a golden kraken worth 8 to 75x, and a red gem held by a golden spider worth 10 to 100x.

The wild symbol is represented by a golden skull, the scatter symbol is a keyhole with the word “Scatter” written across it, and the mystery symbol is none other than the grimoire itself, with a glowing question mark featured on the book's cover.

Now that you understand the symbols, let's get into how to play:

  • Open the games window and review the paytable before getting started.
  • Choose your bet level (1 to 10) and coin value (0.01 to 2)
  • Spin the reels manually with the play button in the center just below the reels, or select the Autospin option and choose between 10 and 1000 autospins.
  • Wins pay out on the paylines from left to right.


The game takes place from the view of the sorcerer, which in this case, is you, the player. The symbols on the reels, which float (making them seem more realistic), appear before the player as though the player is summoning them from their own magical spellbook.

The reels are set in the sorcerer's chambers, with a huge rose window in the background and the starry night sky seeping in. The imagery within the chambers includes occult artifacts, old books, and flickering candles, lending to the atmosphere of the game.

The symbols on the reels are highly detailed and beautifully designed and animated. When a winning combination is formed, the payline is animated by a blue auric field, which forms various arcane patterns. The Harry Potteresque soundtrack adds to the mystery and drama of the game. 

Features and bonuses

Golden Grimoire online slot game screenshot of win

Wild Symbol

The wild symbol, which is a golden skull, substitutes for all symbols, excluding the scatter and mystery symbol. It can only be activated as a result of the mystery symbol transformation. If a mystery symbol transforms into a wild, all the symbols in the row between the mystery symbol and leftmost symbol will be transformed into wilds.This makes it possible to fill the reels with wilds.

Free Spins

To score some free spins, you must land 3 or more scatter symbols anywhere on reels 1, 3, or 5 during the base game. A minimum bet of 2 credits will improve your chances of activating the free spins round, while bigger wins only really become available at around 10 credits per spin.

Mystery Symbol transformation

The grimoire is the mystery symbol and can appear on reels 3, 4 and 5. When a mystery symbol lands on one of these reels, one of the surrounding symbols (whether a low-paying, high-paying, or wild symbol) will be selected and the mystery symbol will transform into this symbol. If the newly transformed symbol matches the leftmost symbol in the same row, all symbols between the mystery symbol and the matching leftmost symbol will be transformed into the same symbol, creating a winning combination. If the chosen symbol is a wild, all the symbols between the wild and the leftmost symbol on the row will be transformed into wilds, regardless of whether any other symbols match.

Sticky Mystery Symbol

The sticky mystery symbol can appear on reels 2, 3, 4, or 5 during free spins. These symbols act in the same way as the mystery symbols in the base game, except that when you land a sticky symbol, it remains in its original position until the end of the free spins round. It will then transform into a different symbol with each free spin.

Similar games

For more magic-themed casino slot games, check out the following online slot titles:

  • Age of Conquest
  • Griffins Throne
  • Crystal Magic
  • Mythic Maiden
  • Hex Breaker

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Our BetMGM editors and authors are casino experts with a wealth of knowledge of the online casino industry at all levels. Their coverage includes company news, game reviews, how-to instructional articles, strategy guides, and editorials showcasing BetMGM’s superior product and game library.

Our BetMGM editors and authors are casino experts with a wealth of knowledge of the online casino industry at all levels. Their coverage includes company news, game reviews, how-to instructional articles, strategy guides, and editorials showcasing BetMGM’s superior product and game library.