that is a hard one. I have so many that have stayed with me and I have loved. But, I guess if I had to pick JUST ONE, it would have to be gabriel knight 2. I still love that game, and now I probably like GK1 even more, but, that is the game I couldn't get out of my head while I was playing it, and I still enjoy playing it today. but, as I say, that is a hard one to answer.