Three reasons:

: For official merchandise and potentially available book stock, visit the official H.R. Giger Museum shop H.R. Giger Books site Secondary Markets

In the 1980s, Giger became fascinated with the works of H.P. Lovecraft, particularly the Cthulhu Mythos. He created a series of illustrations for the Necronomicon, which were later published in various formats. Giger's artwork for the Necronomicon is a testament to his affinity for dark, surreal, and often disturbing themes.