I've been waiting for this game since I saw it in Game Informer about two years ago and when that day finally came I was as happy as a squirrel with a sack of nuts.
I started the game and was amazed by the pure eye candy that was the graphics; the water effects looked better then any other game I've played before, level textures were great, and the only real graphics that weren't awesome was the faces.
As I continued on I started to notice what was the real appeal that drew me in to System Shock and F.E.A.R. which was the very atmospheric and creepy music and sound effects which scared me a couple times and the voice acting was also awesome and gave all the characters real depth.
The guns in the game felt great even though they were really standard for a FPS and the addition of Plasmids (genetic power ups that gave you lightning, fire, ice, telekinesis. etc.) were great at first but became a novelty pretty quick because I was really only using the lightning bolt the majority of the time.
Story is what kept me going (as it should have 'cause it is a single player game only) and getting the good ending, while short, was great and rewarding.
Over all it's a great game but not as great as say Half-Life 2 but a must buy/play none the less.