In the book and on the Website, readers—usually addressed as "Fear Seekers"—have also discovered a complex hidden story about "Investigator Gee" that has spurred some debate.

Reviews to date have been positive, with substantial praise devoted to the author's horror-humor writing and the book's design, which includes a holographic cover featuring a skull.

[1][2][3][4][5] Although marketed to readers as young as 8 and 9 years old, Encyclopedia Horrifica has also attracted a cult following among teen and adult sci-fi/fantasy/horror fans,[6] receiving favorable reviews from genre publications such as Rue Morgue[7] and Apex Digest.

It was presented as a place to provide information about personal supernatural experiences and phenomena, and Gee would occasionally collect these into blog form.

For the final and most controversial chapter in the book, the author created a miniature replica of his office in order to stage his own death (or undeath, per page 128).

According to press materials, it took the author roughly one year to construct and photograph the dollhouse mystery scene, which contains more than 150 meticulously detailed items such as a miniature death's head moth, a grappling hook, and a tiny comlink headset.