There's something slightly...off about this game that I was always unable to put my finger on. It expands on everything present on the first game, with added features of different times of day, more abilities, and being able to explore street-level areas. But as someone who played a lot of the original game and was well-versed with the limitations of it, I think it's these new features that gives me that weird feeling. It feels like a cracked-mirror version of the original and the stories of it being re-worked so close to release due to the 9/11 terrorist attacks further add to that uncanny feeling I have.