Theme of the Great Griffin totally matches my taste, so i payed this slot lot more attention than i usually do. And i got a bit disappointed.
The reel pays are low while the variance is high. If you play 50 lines on a 1 coin bet the best you can win without wilds is 8x bet, and in my oppinion its really low, i have a constant feeling that slot is missing one or two strong symbols. And that would be my only complaint.
Everything else is really great. Gryphon is flying across the reels most of the time (i have an imression its at least 8 of 10 spins) and it happened that it turns even 3 symbols to wild couple of times. It has almost every feature that Microgaming
implements in slots: wild multiplier of 2x, good pick me bonus with max win of 150x total bet, free spins where you can choose between higher multiplier or hihger number of spins, and even a gamble feature.
So all in all, extremely entertaining and quality slot, with reasonably high hit chance despite the variance, but if you want to win big (and i dont mean whopping, just big) you need either 5 wilds lined up or bonus or free spins.