Sanctum: A Heart Sourcebook
Grant Howitt & Christopher Taylor
Heart RPG (3)
HEART: The City Beneath
Heart RPG (1)
Strata: a Spire sourcebook
Spire RPG (3)
Black Magic
Spire RPG (1.10)
Spire: The City Must Fall
Christopher Taylor & Grant Howitt
Spire RPG (1)