Essentially, the comic was used as a method to teach sequential thinking and for studying the approach of other artists and creators.
[1] Notable creators who contributed to Sisterson included Nick Abadzis, John McCrea, D'Israeli, Hunt Emerson, Woodrow Phoenix, Darryl Cunningham, Charlie Adlard, Roger Langridge, and Simon Fraser.
Taking an idea from then-student/future LCC course director Steve Marchant, one of the attendees, Dennis Sisterson, initiated a jam comic, and it became a regular feature of the class.
Among the participants at the original London Cartoon Centre class were comic artist/teacher Steve Marchant and writer Andrew Pilcher.
Rules were developed over the years by various players, eventually distilling into this form: Sisterson is a game for three or more people.