I'll admit I'm biased, probably the former (great remake nostalgia) If you enjoyed the original System Shock 1 or System Shock 2, I think it's a must play (though some ss1 purists whine about minor gripes). For someone new to the series, I think you'd dig it, but with caution. Part of what I really liked about it was how much it retained the level design (almost maze-like claustrophobic), it really doesn't hold your hand with where to go or how to accomplish things. It's easy to get lost, at times enemy AI is also a bit clunky, so some people may find that frustrating. Still, I'm sure there are newcomers that would find it a fascinating series to dive into.