The filmmaker - who directed the prequel starring James McAvoy as Charles Xavier/Professor X and Michael Fassbender as Erik Lensherr/Magneto - has plans for a follow-up if the movie is a success and has a "big idea" in mind for a storyline.
He said: "If the film's a hit, I'd be very interested in doing a sequel. The team I had on it were great, and the hard thing is creating a new franchise, so if it works, it would be fun.
"My ideas are much bigger for the next one. I've got some really big ideas. I'm surprised everyone is calling this a really big epic movie, and I'm thinking, 'Wait until you view the next one if you think this is epic, the next one you won't believe what happens.' "
Matthew has previously revealed there will only be one new character in any future story.
He said: "We will only have one more new character. I won't say who he or she is! But we will only be bringing one more new character in. Because, I think, as Professor X is in a wheelchair, Magneto needs to have a nemesis he can fight with.
"Someone that will be his equal. I know who it is. It would be nice if I could say something, but I can't."