X-Men is an American superhero film series based on the fictional superhero team of the same name, who originally appeared in a series of comic books created by Stan Lee and Jack Kirby and published by Marvel Comics. You can choose to watch the X-MEN series in order of release date, which will be very simple and clear. If you want to really invest and watch in chronological order, this is not the easiest task. This timeline summarizes the best order guide for watching movies and even takes into account timeline differences. When you watch the movies in this order, you will understand the whole story better.