This game is just amazing. It might be over 10 years old but the game play and level design haven't been surpassed. So many aspects of this game have been borrowed by more modern titles.
I have a feeling we may be seeing system shock 2 appearing on here soon. Hopefully they have fixed the dual core bug in the dark engine. If they have, I'll be buying this version even though I already own a boxed version of the original.