Monthly Sunday Gene-X

Monthly Sunday Gene-X (月刊サンデーGENE-X), often abbreviated as Sunday GX (サンデーGX), is a seinen manga magazine published by Shogakukan. Like many other manga magazines, it is an "anthology magazine", with each issue featuring new chapters of several manga series. The series are also published in tankōbon form under the Sunday GX Comics imprint.

History
The magazine's title, Monthly Sunday Gene-X, refers to its mission as a manga magazine for Generation X. The first issue was published on July 19, 2000 and new issues are published on the 19th day of each month &mdash; not necessarily on a Sunday. The title uses the word "Sunday" more as a trademark or genre name, shared with its sister magazines Weekly Shōnen Sunday and Weekly Young Sunday.

Shogakukan also publishes manga series previously featured in Sunday GX as paperback tankōbon (compilation volumes) under the imprint Sunday GX Comics.