Since I can only base this on games I've actually played, I'm going with Castlevania: Lords of Shadow. I'm a completionist, but this is one of the two games in my entire life I returned to the store without bothering to finish it (the other being Viking, which came out last year, I believe).
I've loved the Castlevania games since the NES days (not all of them, obviously), but this was a God of War clone and I hate God of War. I struggled to finish the first and swore I would never play another. I was just horribly disappointed by the lack of Castlevania-ness and the combat. You could just tape down the x button, go read the dictionary and somewhere around Q the enemies would final-fucking-ly die.
I've loved the Castlevania games since the NES days (not all of them, obviously), but this was a God of War clone and I hate God of War. I struggled to finish the first and swore I would never play another. I was just horribly disappointed by the lack of Castlevania-ness and the combat. You could just tape down the x button, go read the dictionary and somewhere around Q the enemies would final-fucking-ly die.