The Cogheart Conundrum

A Steampunk D&D 5e One-Shot Adventure (Level 10)

Bring clockwork chaos, roaring engines, and metallic monsters to your Dungeons & Dragons table.

The Cogheart Conundrum is a fully playtested Level 10 steampunk one-shot adventure for D&D 5e, designed for minimal prep and maximum drama. Perfect for a single session or as the explosive beginning to a longer campaign.

The gears of Pyrestone are grinding to a halt. Rogue constructs stalk the streets, machines turn against their makers, and all signs point to Sprocket’s Steamworks, where a genius inventor’s greatest creation threatens to usher in an unstoppable Age of Steel.

At the heart of it all waits a towering mechanical horror known only as Big Clank Daddy. Will your party save the city… or be crushed beneath its cogs?

BONUS CONTENT: EXCLUSIVE SUBCLASSES

Included in this adventure are two original player subclasses, perfect for steampunk or industrial fantasy campaigns:

• Barbarian Path of the Overcharged: Unleash supercharged rage powered by unstable energy cores. Become a walking engine of destruction, but risk catastrophic overload.
• Rogue Saboteur: Masters of disruption, explosives, and clever devices. Control the battlefield through traps, gadgets, and perfectly timed chaos.