I love puzzles and spookiness, and have been looking for a game to hold up to my personal favorite spooky puzzle game, Anchorhead.
Lydia's Heart is not as spooky as Anchorhead. However, the setting is vividly described and the plot of the story created a sense of urgency in places, enough so that I jumped at least a few times when my husband interrupted me.
The puzzles were logical and interesting. A word of warning to future players, however, that sometimes looking in the same place at a different point in the game can yield a new item. This particular facet of the game was my one big point of frustration, since generally in IF I expect to find everything in an area when it's searched. However, I think if I'd known from the beginning that some areas could yield new items when I had different needs, I would have found the puzzles to be less frustrating. As it was, I ended up referring to the in-game hint system far more often than I like.