Strange as this may sound, I couldn't watch the trailer. It was too freaky for me.
It's definitely got an emotional tug. Since I'm such a sucker for them, it's probably just the musical score, but the trailer instantly drew me in and made me have an emotional connection to the well animated characters.
I'm hoping for a similar sad, graphic game, filled with hopelessness and fear. Having to hide, make raw choices about risking yourself to try to help others or letting them die.
Shooting waves of Zombies in an arcade-shooter (ala Left 4 Dead or Dead Rising) is entertaining, but there's an untapped market for heart wrenching games. I haven't played a game in a very long time where I had to stop and consider what to do, or what gray moral choice to make. It's all either be good/evil or a jerk/chivalrous knight. Where are my thousand shades of gray?