Necklace of Skulls is an entertaining and atmospheric gamebook, unusually set in the Americas, Mayan era rather than an alternative fantasy world. There isn’t any filler, the setting is well realised and the puzzles are fair. As with other Critical IF (formerly Virtual Reality) books, I also like the fact there weren't any difficult rules to understand (or disregard).
Like a lot of the author’s gamebooks, while I enjoyed them all back in the day, it’s only having read them latterly that I fully appreciate the depth of the story and quality of the prose. The more I consider it, the higher the series ranks in my list of favourites gamebooks given there isn’t a weak link and because of the originality of each entry. Heart of Ice, in particular, is a classic of the genre.