If not, dont. Please. It wasn't that critical to the story (I'd go so far as to say completely superfluous) and is an obvious ploy for more money. But this isn't a review about the movie, onto the game!
Dead Space starts you out with the beautiful view of the mining ship Ishimura. As I started up the game my roommate was sitting next to me and mentioned it all seemed to look very similar to the movie Event Horizon (not the movie I was talking about earlier, I was talking about the dead space movie earlier). Having never seen the movie (leave your nasty comments at the door, I'm getting to it), it was a fresh and new experience to me.
Overall the game plays very much like what is expected of a Survival Horror game of today. If you have played any of the Resident Evil games, you know what the camera and controls of Dead Space are like.
To be honest, none of the characters are truly imaginative after the first 30 times fighting them. They have their standard baddy (the tall mutant with the scythes and the mini hands bursting out of it's stomach) which show's up almost constantly. The fear factor of that monster only wears off when fighting 5-6 at one time, and it does happen. There are numerous other monsters that all add to the variety of the game, and spice things up a bit.
This game is truly like Resident Evil in that you have to SAVE as much ammo as you can. I am on my second play-through (not that I beat it, had to restart) because I needed more ammo. Word of advice, don't get the flamethrower, it's a worthless weapon.
I believe this game uses the Unreal Engine that games like Gears of War has used. And I have to say, I'm quite impressed. This game while showing that obviously is the Unreal Engine, isn't made up of the same 'roided up men running around in the same environments. They changed it up to make it look unique. A nice feature to the game is the removal of the HUD. Or should I say the gentle insinuation of a HUD. You can still see everything that's important. From ammo to health and beyond. But it's not done in the Halo way of pasting it onto your screen (nor should it be, seeing as this is 3rd person, not 1st. The visor excuse doesn't work here). The sound is also done superbly in this game so that you are jumping at every sound that's made wondering if it was the creaking of the ship or something moving around the corner. The lighting in the game also make it superb, although I had to adjust the light settings pretty high so that I could still see the walls on either side of my character. Apparently they want you to be in pitch black.
A feature I really liked in this game is the ability to see where you need to go. It's not the breadcrumb gimme that Fable 2 force-fed you. For the most part you can find where you need to go, but if you can't, you press a button and Isaac's(the main character) suit temporarily lights up where you need to head. This feature has helped immensely without being invasive to the gameplay.
Overall this game plays exactly as a survival horror should and is the perfection of the genre it represents. While it does fail in a few areas, for the most part it's a really good game that I'd recommend buying for anyone who is into this type of game.