Prey borrows heavily from it in terms of gameplay, but SS2's story is significantly more interesting, imo. I got System Shock 2 recently at the Steam Sale and want to start playing it soon. It does work fairly well as a standalone game and plot.
I'm envious of this being your first play through, it's a fantastic game. System Shock 2 had Steam trading card support added on 13th July There are 5 cards in the series, and you'll receive 3 cards at random for purchasing and playing the game. 5, TRADING CARDS, 5, BADGES, 1, FOIL BADGE, 6, EMOTICONS, 4, BACKGROUNDS FOIL TRADING CARDS.