This one has been driving me crazy, finally stumbled upon it looking through the Adventuregamers.com database, fortunately it was on the first page so I didn't have to look far, lol.
Anyway, it's 15 Days.
I was right that I haven't played it but the graphic style is very reminiscent of the Animation Arts games (Lost Horizon and Secret Files) released around the same time which I really enjoyed.
Looks like this one didn't get a very good rating though, probably why I never played it. I'm guessing you have played it, what are your thoughts on it, worth checking out?