Return to Player
96.44%
Minimum bet size
0.20
Game Type
Video Slots
Volatility
Low
Number of reels
5
Progressive jackpot
No
Popularity
Maximum bet size
400
Game Provider
NetEnt
Bonus features
Yes
Paylines
20
Theme
Fantasy
Golden Grimoire Online Slot
Golden Grimoire is a distinctive slot themed around magic and mystery. Its features include sticky mystery symbols, mystery symbols, free spins, and Wilds—but every one of these features is hidden from view.
Theme and Story Line
Golden Grimoire draws on the grimoire, a book of spells, for its theme. Enchanted writing fills a magical chamber, where symbols appear and disappear until the right formula casts a spell and creates winning combinations.
Graphics, Sound, and Animation
Launch Golden Grimoire and enter a spell room beside a window for stargazing. Stars revolve behind the reels as magical dust drifts through the air and candles flicker softly. The carefully drawn 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, creaks and other oddly unsettling sounds play in the background.
Top Casinos to Play Golden Grimoire:
Gameplay
Golden Grimoire has 5 reels and 20 pay lines. Its symbols are grouped into mystery, medium-win, low-win, and Wild categories. Select the ‘i’ button to view the paytable, which appears in a magical flash.
The ‘Medium Win’ group consists of glinting gems bearing symbols, each held by a reptile. These symbols can pay from 100 coins down to 5 coins multiplied by the ‘Bet Level’. The ‘Low Win’ group features card suits—spades, hearts, clubs, and diamonds—with payouts ranging from 20 coins to 3 coins. Combinations contain exactly 3, 4, or 5 symbols.
Those payouts may seem modest at first. The ‘Mystery Symbol’ changes the picture, allowing several wins on a single 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: Mystery Symbols appear only during free spins, on reels 2, 3, 4, and 5. When one is revealed, the game selects a medium-win, low-win, or Wild symbol, and every mystery symbol on the reels changes to match. If the selected symbol matches the symbol on reel 1 in the same row, every symbol between them changes too. The same rule applies to Wilds. The review presents this as a way to pursue a big win, but the feature and any individual result offer no guarantee.
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 for the entire free spins round instead of paying and disappearing. This repeats the mystery symbol’s magical effect after each free spin and can produce potentially huge 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 with a ‘Coin Value’ of 2.00 makes the total spin bet 400.00. At the other end, ‘Level 1’ and a ‘Coin Value’ of 0.01 make a 0.20 spin. Each increase or decrease in ‘Level’ changes the ‘Bet’ value by 20 or -20 coins, respectively. The stated RTP is 96.44%, and the reported payout frequency puts the slot in the low-to-medium volatility category.
Conclusion
Golden Grimoire’s mystery symbol appears in two forms. It can contribute to larger wins in the base game, but has a greater impact during free spins, when its sticky version stays on the reels and continues to affect multiple symbol combinations. This design may lead to strong individual results, though a win is never assured.
Evan Carrington brings more than 12 years of experience in the iGaming industry, specializing in online casino reviews, slot game analysis, and player safety assessments. Their expertise includes casino licensing, RTP, volatility, bonus terms, and withdrawal policies. Combining hands-on reviews with independent research, Evan provides clear, evidence-based coverage to help players understand gambling platforms, their features, and possible risks.
