I can't begin to state enough that Deadly Premonition is most definitely not a game for everyone. For anyone that has been playing other hits like Dead Space, Resident Evil 5, or Silent Hill, you should continue to play those games. They are infinitely better and you should not waste your time with Deadly Premonition.
Now that most people have moved on, anyone still reading this far knows there is something very different about Deadly Premonition, something special. I wish I could say it was for the stellar graphics. It isn't. Most of the characters in Deadly Premonition look like dull, robotic clones from an early PS2 game. Trees that populate the heavily-wooded surroundings of the town are nothing more than sticks and tissue paper. Animations are stiff, the color palette seems washed out, and not a single person in this world can smile without looking like a demented clown from a child's nightmare.
So, is it the music or voice acting? That's another big "No." The voice acting is some of the worst performances in games since the original Resident Evil on PlayStation. There isn't any accompanying soundtrack either. You could count the number of original songs in Deadly Premonition on one hand, maybe two as you pass the ten hour mark. Most of the game is silent when you are not speaking to residents of Greenvale, (the small wooded town where the game takes place) and what little accompaniment it does have is so loud and non-sequitur, some of the scenes sound as if the characters are intentionally trying to talk over the music.
So what is it then? Honestly, it's all those things I have already said and another layer of bizarre campiness that has me hooked. It's the videogame equivalent of a cheesy 80's movie whose only redeeming quality is that it was able to keep all the actors awake during filming. For the incredibly small segment of gamers out there that appreciate and relate to what I am saying, go out and buy Deadly Premonition immediately.