Great game if you get over the controls. Story feels rushed and unfinished near the end.
That aside, the game is great. I love that you get to play all the main characters. It gives a more movie-like feel to it. I'd tell you about the story, but that'll just spoil the fun. I really felt like I was watching a movie while playing it. That is, except for the action scenes where I had to concentrate on the flickering lights and the power meter. The fighting scenes by the way are really exaggerated, but I personally like their style. As for graphics, it's just stunning considering how light it all is. The details are great and the lighting (or lack thereof) is excellent. It's so good that at times it gives you the impression that something can jump at you at any moment when the lights go out. Try using the first person view and you'll know what I mean. Sadly, you'll just have to bear with the rushed and unfinished ending as I hear they ran out of funds or something like that during development. It's a real waste since the initial concept really was quite compelling.
It's no Silent Hill, but I've had my fill of zombies already so I like this game. If you can't decide, try the demo first..