Honestly, I wouldn't touch Dead Space two or three until you play the original. It might be worth waiting for the remake to come out soon, but I recommend trying the base experience because it's way ahead of its time. The graphics and immersive and impeccable soundscape look amazing for a ps3 game. Dead Space 2 and 3 are more on the action side, and the original is the most treacherous and bizarre in the series. Playing it will give you an accurate perception of the horror roots.