Picked this up on a whim, and am enjoying it thus far.

Not very far in yet, but it's slightly reminiscent of Bioshock, at least visually.

Audio recordings and other media, along with flashbacks, explain the backstory along the way.

Weapons (the few I've found) are solid and satisfying to fire. They can be upgraded later on (as I understand it, although I haven't had the opportunity yet)

Fairly spooky atmosphere provides enough tension to keep things interesting

Working with an AI ally has been fun

Overall it would seem this is a good game that will satisfy my FPS craving for awhile.

Anybody else played it yet?

review here --> http://www.gamespot.com/pc/action/si...ty/review.html