Just finished playing through Outcast, a 1999 PC game (not to be confused with a similarly titled Jedi Knight game). I played through it back in 2000 or so, and this time around I just fired it up to take a look at how the graphics would look on a super-fast machine (compared to what they had at the time), and to look at their graphics aesthetic (they used a very-different-from-normal engine) to think about my sphere-raycasting thing. This was a week or to ago, and I ended up getting sucked into playing it. In some ways it's very System Shock-esque; it's a weird action-adventure hybrid with an awful lot of combat. It not only has neutrals you have conversations with, but the it's one of the most alive-seeming games I've seen, well, until maybe the modern city games like GTA3 and Crazy Taxi.