In 1989, as a marketing tool, each issue of the series was available in a special "MPI Audio Edition", accompanied by an audio cassette containing a performance of the text of the issue, with musical cues. The series was also reprinted as a single 160-page paperback (Tor Books ISBN 0-8125-0353-8). That same year, the series was reprinted in smaller format as a premium for Batman breakfast cereal.