Return to Player
96.44%
Minimum bet
0.20
Game type
Video Slots
Volatility
Low
Number of reels
5
Progressive jackpot
No
Popularity
Maximum bet
400
Game Provider
NetEnt
Bonus features
Yes
Paylines
20
Theme
Fantasy
Golden Grimoire Online Slot Game
Golden Grimoire is a distinctive slot steeped in magic and mystery. Its features include sticky mystery symbols, mystery symbols, free spins and wilds—but all of them are hidden from view.
Theme and Story Line
Golden Grimoire draws its theme from the grimoire, a book of spells. Its enchanted writing appears in a magical chamber, where symbols materialize and disappear until the right formula casts a spell and forms winning combinations.
Graphics, sound and animation
Starting Golden Grimoire takes you into a spell room with a window for stargazing. Stars revolve behind the reels as mysterious magical dust drifts through the air and candles flicker. The carefully illustrated reel symbols appear to float or bob in place. NetEnt built the game as a fully animated 3D slot, and its presentation reflects that approach.
The soundscape is restrained and eerie. Along with the spinning reels, you’ll hear background creaks and other strangely unsettling sounds.
Top Casinos to Play Golden Grimoire:
Gameplay
Golden Grimoire has 5 reels and 20 pay lines. Its symbols are divided into mystery, medium-win, low-win and wild categories. Select the ‘i’ button to open the paytable, which appears in a magical flash.
The ‘Medium Win’ group features glinting gems bearing symbols, each held by a reptile. They can pay from 5 coins up to 100 coins multiplied by the ‘Bet Level’. The ‘Low Win’ group consists of playing-card suits—spades, hearts, clubs and diamonds—and pays from 3 to 20 coins. Symbols form combinations of 3, 4 or 5 only.
Those payouts may seem modest at first. The ‘Mystery Symbol’ changes things by allowing several wins on one spin. It eventually appears as a thick book marked with a ‘?’. A glowing gold symbol also rolls across the reels: the free spins scatter.
Bonuses and Free Spins
Mystery Symbol: The Mystery Symbol appears only during free spins, on reels 2, 3, 4 and 5. When it is revealed, the game selects one medium-win, low-win or wild symbol, and all mystery symbols on the reels change to that selection. If the chosen symbol matches the symbol on reel 1 in the same row, every symbol between them changes too. Wilds follow the same rule. This can create opportunities for a big win, but neither the feature nor any result guarantees one.
Free Spins: Land 3 scatter symbols on reels 1, 3 and 5 to receive 8 free spins.
Sticky Mystery Symbol: These symbols appear only on reels 3, 4 and 5. They work like the mystery symbol but stay in place throughout the free spins round instead of paying and disappearing. The mystery symbol’s magical effect can therefore repeat after each free spin, potentially producing large wins on individual spins.
Bet Sizes, RTP and Variance
Golden Grimoire uses NetEnt’s familiar ‘Level Bets’ and ‘Coin Value’ controls, with some high-stakes wagers available. A ‘Level 10’ bet at a ‘Coin Value’ of 2.00 makes the total spin bet 400.00. At the other end, ‘Level 1’ and ‘Coin Value’ 0.01 result in a 0.20 spin. Each step up or down in ‘Level’ changes the ‘Bet’ value by 20 or -20 coins, respectively. The stated RTP is 96.44%, and its reported payout frequency places the slot in the low-to-medium variance category.
Conclusion
Golden Grimoire’s mystery symbol comes in two forms. It can help create larger wins in the base game, but has a greater impact during free spins, when the sticky version stays on the reels and affects multiple symbol combinations. This design may lead to strong individual results, but a win is never assured.
Evan Carrington brings more than 12 years of experience in the iGaming industry, with a focus on reviewing online casinos, assessing slot games and examining player safety. Their work covers casino licensing, RTP, volatility, bonus terms and withdrawal policies. Drawing on practical testing and independent research, Evan provides clear, evidence-based reviews to help players understand gambling platforms, their features and possible risks.
