Terror on the Arkham Express

A one-page dungeon set on a train departing from the town of Arkham. Strange happenings on the train are the work of cultists serving dark eldritch god. The heroes will need to figure out which of the train's passengers are cultists, and stop their plans before it's too late.

This adventure is themed around the Cthulhu mythos, and is designed to be system-neutral. It was originally one of the winners in the 2020 One-Page dungeon contest, which challenged creators to write a complete adventure that fits on a single page. I decided to upload mine to my own page in a later spark of motivation in 2023.