Man oh man, so I just got done playing Dead Space 2 for five straight hours and I think its time to crash.  That game is seriously awesome.  I really feel like its the type of game that must be played at night with the volume turned all the way up. The core game play is about the same with a few tweaks here and there.  One big change that I noticed was that zero gravity seemed a lot less disorienting.  But the games sound and visuals are absolutely amazing and they have blown me away.
 
I'm a sucker for Sci-Fi horror flicks like Alien and Event Horizon and you can tell the developers took some inspiration from those films.  I haven't played a survival horror game this good since the original Silent Hill and its safe to say that I will be playing the shit out of this game.  I gotta S rank it.
 
I dunno about the multiplayer though.  I havent tried it, but it just sounds so fucking dumb.  Dead Space works well as a single player game and trying to turn it into something its not just seems like a mistake.