Golden Grimoire slot, as the name suggests if you know some basic French, takes us to the dark side with an occult type of magic theme. A mysterious candlelit room with books and potion bottles sets the scene here and this is compounded by some gentle and mysterious music while we play. If you imagine a game designed as a hybrid of Netent's Magic Portals and Mythic Maiden slot then you're pretty bang on the money with Golden Grimoire. I am confidently predicting though that rather than being golden, this game will likely be grim for your bankroll.
The grid consists of 5 reels of 4 rows each over 40 fixed lines, for which you pay 20 coins a play. Symbols are stacked and promise much when you look at them but the line pays for 5-of-a-kind wins have told me from the outset that Golden Grimoire will indeed have a grim outcome for your funds. The best of those is a Red Jewel at 5x bet or 100 coins for a full line, Green 60, Blue 40 and Purple 30 along with 4 card suits at either 20 or 15 coins. They all appear stacked so there is a chance of bumping up those pays, but usually only if the Mystery Books appear.
On reels 3,4 and 5 you will likely see some stacked Books land. After a long and tedious few seconds of spinning, these reveal a symbol from those listed above. Your modifier is that if the symbol on reel 1 on any row matches the icon revealed by the Book on that row, the symbol will change all those in between them too. You don't get Wilds on the reels but the Book can reveal Wilds on rare occasions and therefore the symbol on reel 1 will be expanded across the row to, whichever one it is.
Should you see 3 Keyhole scatters on reels 1,3 and 5 you will earn 8 free games. There aren't any retriggers but 2 scatters will award 5 extra spins. During these free games the Mystery Book stacks can appear on reel 2 as well and they will all become sticky for the duration. So, in theory you could have some spins at the end with all reels full of mystery stacks bar the first. The Mystery Books held will all produce a different symbol each spin.
Golden Grimoire slot is great cosmetically, has lovely graphics and good animations. The RTP is high too at 96.44% so we have all the ingredients here for a very complimentary review you'd think? Actually, no - the game is even more grim to play than I first thought. The mystery icons take too long to reveal but my primary concern is the terrible mechanic and maths model we have here. Seriously Netent - 200x bet for a full screen of the top symbol??? Alas we have a slot with the dreaded egg-timer effect on your bankroll: the low variance ensures that once you're say 50x bet down or more, you'll not likely recover things and your bank will slowly but surely only go one way. This slotting episode really has been written by the Brothers Grimm...
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