My wife and I were just telling my 13 year old about this game. It was incredibly immersive for the time, running on my Voodoo graphics card and soundblaster 3D audio card :) I would be sneaking around and my wife would try to talk to me (in real life) and I would shush her because I didn't want to be heard :) She also played the game, and both of us would commonly bonk our head on the monitor (old CRT style) as we were trying to look around a corner in the game :D

Good times - great game!