The four parts of C5 were originally published as separate mini-modules included in issue Nos. 16–19 of the RPGA's Polyhedron newsletter: RPGA5 The Riddle of Dolmen Moor, RPGA6 The Incants of Ishcabeble, RPGA7 Llewelyn's Tomb, and RPGA8 ...And the Gods Will Have Their Way.
The C5 modules were initially published as individual components in issues 16–19 of the Polyhedron newsletter: RPGA5 A Puzzle from Dolmen Moor, RPGA6 Spells from Ishcabeble, RPGA7 Llewelyn's Burial Ground, and RPGA8 ...And the Gods' Will Be Done.