"The Legend of Zelda, Ocarina of Time". Though I didn´t really played it at that time. It was my uncles and I liked it more to just sit there and watch him playing. I was kind of scared, when I played it. All the skeletts which came out when the day turned night and you´ve gotta defeat them just to get around. Hyrule Castle was also scary, after Link turned into an adult and the whole citizens becoming zombies.
Maybe I was so scared, because they also let me and my cousins play "Turok" at the age of 6 x´D