True Love for me. I played it soooo many times... And then I discovered "Season of Sakura". I wonder if any of you remember that one... (Damn I'm old lol). Some times, on really really rare occasions, when I only have my DOK (that has SoS on it) and nothing to do I play it some more ^^. After that came games like "Chain -the lost footsteps-" and "Kana Little Sister" (can't remember the order...) and years later here I am, So messed up XD.
I remember I have posted once here, but hell, I'll say it again.
My first VN was Tsukihime, and my favorite VN ever, now and forever.
Mystic Eyes of Death Perception, the most powerful ability ever, given how you would use it.
Didn't realize it at the time, but I sure picked a fine one to start with. I still consider it head and shoulders above all the others I've read thus far. (Excluding Fate/Stay Night anyway. Those two are about equal)
In fact, I just got done playing through it again a few days back, and I can't stop praising it. There is a reason quite a few people place that one in their top five.
I think mine was The Sagara Family as well. At least one that I played all the routes. I know around the same time I was playing Do You Like Horny Bunnies? 1 and 2, but I didn't really get too into those.