Indrajal Comics commenced with a monthly schedule. The first 10 issues devoted 16 pages to The Phantom, so many of the stories were edited to fit this format. Twelve pages were devoted to general knowledge (Gold Key style) and other stuff. The next 19 issues were 20-24 pages. Beginning with issue #29, Indrajal standardised on the conventional 32 page format. The series switched to fortnightly publication from #35on 1 Jan 1967 (released on the 1st and 15th of each month). Mandrake made his first of many appearances in #46 (15 Jul 1967). Indrajal Comics changed to a weekly schedule from #385 on November 1–7, 1981("The Embers of Fury, Part I").This issue featured "The Phantom" once again.Starting with #789 on 20 Aug 1989(Vol 26 No 33), the series once again returned to a fortnightly schedule with 36 pages each.