Fog on the Thames. Horror in the gaslight.”
Step back to a London lit by gas and haunted by things the light was never meant to find. Cthulhu by Gaslight takes Call of Cthulhu into the fog-bound streets of the late Victorian era — a world of séances and social season, hansom cabs and hidden cults, where class and respectability matter as much as sanity. Below you’ll find everything you need to play or run it with us: quick-reference cheat sheets for players and Keepers and a guide to building your own investigator. Mind the fog. It rarely comes alone.
Support the Game
We play it because someone made it.
Cthulhu by Gaslight is published by Chaosium. If you like what you see here, support the people who made the thing and pick up your own copy.
We’re big fans of the team at Dungeonland — a proper independent games shop run by people who know and love the hobby. If they’ve got it on the shelf, that’s where we’d start.
Can’t find it there, or prefer digital? DriveThruRPG is usually your next stop.