Miners struck black water deep underground — and those who drank it went mad. You’re being paid to find out what’s left of them.
A flooded iron mine. A missing foreman. Something pulsing in the dark below the pumps. The deeper you go, the clearer it becomes that the water isn’t what’s killing them — it’s what they’re becoming.
Claustrophobic exploration and creeping corruption await in the depths.
Players may drop in for any session or carry the same characters through all five rounds, advancing from Level 1 to Level 5 as the campaign unfolds.