As a medieval history nut, Assassin's Creed, a game set during the Crusades, one of the most morally ambiguous times in Western History, which painted both Christians and Muslims in a less-than-stellar light sounded like great fun. And it was. Swimming-based issues aside (I will forever hate that pier-jumping mission in Acre), I seriously enjoyed almost everything about the original Assassin's Creed. I replayed the game twice, trying to pick out plot devices I missed the first time, and challenged myself to fighting with the wrist-blade only (one of my most difficult times in gaming, but I pulled it off). Assassin's Creed 2 was an amazing sequel. I love the history and culture of Renaissance Italy just as much as the Middle Ages, so being able to run around Florence and Venice, great cities that I knew so well, was a pure joy to me. The story itself was also great, mainly because I knew what a perverted bastard Rodrigo Borgia/Alexander VI was from history class ahead of time. Assassin's Creed and Assassin's Creed 2 were a great back-to-back experience for me. Then, even more inexplicably than Modern Warfare, my interest in the series simply dropped dead with the release of Brotherhood. I havn't even bothered looking for it after I read the reviews. That apathy has carried over to Revelations. I simply don't care about Ezio Auditore di Firenze anymore. Perhaps that's the cause of it. With all the potential for historical variety the Assassin's Creed universe has, sticking to late-15th/early 16th centuries maybe has lost my interest. A game set in the Victorian British Empire, in which the cities are not just in one region but around the world, would get things going for me again.
The question I ask, fellow Escapists, is which game series have you started out loving but somehow lost interest in before the series was through, if any? If so, why? You can also answer that you interest faded almost inexplicably, like mine. I'm curious.