beatchef, that Granny's Garden screenshot sent chills up my spine! I used to have it on the trusty BBC B+. It stressed the hell out of me, always worrying that the witch could appear out of nowhere at almost any moment.
The only other adventure game I can think of that freaked me out was Castle Quest, also on the BBC.
Couldn't find the right screenies, but the bits I remember shaking me up were the spider dropping on you, and the troll chasing you over the bridge. Eek!
