Engaging!!
First things first, the characters, they are all well taken care of, with a very nice depth of personality, with really great dialogs. It is also quite lengthy, or at least, longer that quite a large amount of games of this genre.
The story, as I said in the title, it's quite engaging, it has a very charming way to hook you either with the story and with the main characters, specially if you've played the rest of this series.
It's puzzles are also great, but what it's even greater is it's music, really great quality music.
So, in conclusion, it's an all time must have, to be honest, I bought this game in 97, and since my disc got damaged, I bought it back.