Clandestyne by Gaslight

From the introduction: 1899. In the last years of the 19th Century, the world is on the brink of the modern age. In New York City, the Windsor Hotel goes up in flames, causing millions of dollars in damages and killing fourteen. A single photograph, taken by a visitor at the Windsor Hotel, reveals the blurred image of a figure wearing a dark cassock and hideous, indescribable mask. In the same year, strange yellow worms are found strewn across an Alaskan glacier. In an Amorican cave, Pliocene cave paintings are discovered by French school children, inexplicably mixed with scrawled Arabian script: la mayyaitan ma qadirun yatabaqa sarmadi fa itha yaji ash-shuthath al-mautu qad yantahi al-kadhulu hapexamendios The world is as yet unaware. But unnatural forces are moving, and the time is right... User summary: This complex scenario is distributed as a ZIP archive containing dozens of files in various formats.