LOL, I played that back when I was a kid on my uncle’s Mac, I think. I kinda remembered it was not for the PS1 as I was always fighting my older brothers for time on the PS1 and played it not on the PS console.
oops... no... its Youngary...
You can easily play them again, downloaded straight online.
Gog has System Shock 2, maybe the first one as well:
http://www.gog.com/gamecard/system_shock_2
$9.99 isn’t too bad. I also really enjoyed the Thief series made by the same folks. I very rarely play though, since I’m usually so busy, but I have them on my hard drive on those rare occasions.
The only problem is that these games are so old, that the little cut scenes don’t like to work. You have to google for fixes and go through the trouble of downloading old codecs. Sometimes I have to do that with every play through. It works for awhile, then 4 or 5 months later, the cutscenes are gone again.