Now available in print and PDF is Call of Cthulhu: Madness at Geneva Lake from Gygax Ink and Chaosium Inc. The tale originally appeared at Gary Con 2025, and is a bit of an homage to the TSR years in Ake Geneva. The 70 page softcover (with PDF) is available for $19.99 at DriveThruRPG or grab just the PDF for $9.99.
About the adventure:
December, 1891: The serene, snow-dusted shores of Lake Geneva, Wisconsin, mask a creeping dread festering beneath the icy waters. Once a haven for the wealthy elite and their opulent retreats, the town now trembles on the brink of madness.
The investigators awaken in the halls of Oakwood Springs Sanitarium, with no memory of who they are or how their recent pasts are entwined with the lake’s grim secrets. As a malevolent fog rolls in, the stakes become clear: the ancient Potawatomi wards binding an unspeakable entity beneath the lake are failing.
Can you unravel the mysteries of the Covenant of the Drowned Eye, confront the terrifying Boilerheart Abomination, and stop the release of the Eye of the Lake before it’s too late? Or will Lake Geneva become ground zero for an apocalyptic nightmare that will shatter the boundaries between worlds?
The Madness at Geneva Lake is a Call of Cthulhu adventure that weaves a little-known chapter of TSR’s history into a tale of cosmic horror!
First released at Gary Con 2025, this dread tale by Alyssa Faden and Gary Con founder Luke Gygax is set in 1891 on the snow-dusted shores of Lake Geneva Wisconsin.
Brilliantly weaving a little-known chapter of TSR’s history into a tale of cosmic horror, this scenario blends Chaosium’s mastery of Lovecraftian storytelling with Lake Geneva’s rich roleplaying legacy.
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