Thanks Cat and Stu!

I can now reveal the final game...
Trails and Traces: The Tomb of Thomas Tew
So the complete lineup is:
Captain Disaster in: Death Has A Million Stomping Boots
The Adventures of Bertram Fiddle
Legend of Hand
The Beard in the Mirror
Clam Man
Yet Another Hero Story
Trails and Traces: The Tomb of Thomas Tew
Price: $9.99
When: 11th - 25th November 2019
Where:
https://itch.io/b/389/scabbAll 7 games DRM-free on Itch, 3 of the games (Legend of Hand, Beard in the Mirror and Yet Another Hero Story) also include a free Steam key.