A listing of the campaign by session (red means campaign ended; blue means on hiatus) Number of seasons is brackets
Icefian - 72 [7]
Day Turned Dark - 65 [6]
Tyrogator - 42 [4]
Seafaring - 42 [4]
Hemator - 29 [3]
Palumbton - 28 [4]
Mounted - 27 [3]
Constables - 26 [3]
Cults of Cald - 25 [4]
Plateauian - 24 [3]
Drunnbar - 23 [2]
Wizards - 20 [3]
Rogues - 15 [2]