You take a deep breath of salty air as the first raindrops begin to spatter the pavement, and the swollen, slate-colored clouds that blanket the sky mutter ominous portents amongst themselves over the little coastal town of Anchorhead.

Travel to the haunted coastal town of Anchorhead, Massachusetts and uncover the roots of a horrific conspiracy inspired by the works of H. P. Lovecraft. Search through musty archives and tomes of esoteric lore; dodge hostile townsfolk; combat a generation-spanning evil that threatens your family and the entire world.

The original version was and remains freely available.
To mark the twentieth anniversary of its initial publication, Anchorhead is now available in a special Illustrated Edition. Every aspect of the game has been rebuilt and redesigned from the ground up:

The code has been rewritten in Inform 7 and compiled to the glulx format, allowing far more detail and interactivity than before.
The prose has been revised and polished to reflect 20 years of accumulated writing experience.
Additional puzzles, scenes, and background information to explore.
Decorated with over 50 gorgeous illustrations by Carlos Cara Àlvarez.