I rarely take the time to review a game, mainly because I usually lose interest too quickly. However, this one has truly captivated me. Perhaps it's my enduring fascination with dark fairy tales. I use the term broadly, encompassing more than just the Brothers Grimm's tales as the name suggests. I've invested about $10 into the game, but overall, the gems are readily available. I recommend saving them up for special summons and avoiding wasteful spending if a 5-star is not guaranteed. Best of luck!