This list is for single-issue
floppy comics, also known as the
American comic book format. Unlike the paperback book format, floppy comics are thinner
periodicals and stapled together. Each floppy comic issue is typically 20–40 pages, and usually consists of a single chapter (as opposed to a larger comic book volume that typically includes multiple chapters). A floppy comic is comparable to a
comic magazine, but is thinner in size and is dedicated to a single character or group of characters (whereas a comic magazine is thicker and serializes multiple different unrelated series). This list also contains periodical publications from other countries that are similarly dedicated to a single character or group of characters. Some of the numbers reported here may also include sales of trade paperback volumes, which account for a small portion of American comic sales. According to the most recently available data, the best-selling American single-issue comic of all time was
X-Men #1, which was published in 1991 and has since sold almost 8.2 million copies. == Comic magazines ==