Category:Comic series

Main article: Comic series

Not to be confused with Comics sharing name.

The xkcd strips that are part of a comic series are directly related to each other, rather than simply sharing a recurring topic. A main series must be composed of at least three comics, while a miniseries only needs two comics to qualify; once they get their third comic, they graduate to a main series.

All comic series are intentionally created by Randall as part of a series. This is usually inferred from sequential numbers in the titles (such as in the Stargazing series), similar patterns in the comics' titles (as in xkcd Phones) or captions (Cursed Connectors), release dates purposefully deviating from the normal schedule (Journal), a partnership with other artists (Guest Week) or companies (A Smarter Planet), or Randall bundling certain related comics in one page (The Boy and his Barrel).

For the list of main comic series, see Category:Comic series.

Many of the early comic series have been released as five consecutively released comics, with each episode being released on a weekday, deviating from the standard release schedule. After 2010, no series followed a similar release schedule, as they all followed the normal schedule of three comics a week.