In this Twine short story, a great sense of atmosphere and suspense is created, not just by the use of images and sound, excellent as those are, but by thoughtful use of links: links that change text when you click on them, links that trigger a time delay, and changes of layout. I would have liked the plot to have developed more - it felt like reading the first half of a story.
Nevertheless, this is a good example of what I would consider multimedia fiction, where the interactivity provided by Twine is used not to give the reader a choice of narratives, but to provide atmosphere and to move the story onwards.