Claim: X-Men: Days of Future Past is fiction.
Evidence: X-Men : Days of Future Past is a 2014 American superhero film based on the fictional X-Men characters that appear in Marvel Comics.
These films typically feature action , adventure , fantasy and/or science fiction elements , with the first film of a particular character often including a focus on the origin of his or her special powers and his or her first confrontation with his or her most famous supervillain or archenemy.
Most of Marvel 's fictional characters operate in a single reality known as the Marvel Universe , with locations that mirror real-life cities.