Which 2014 superhero film features Wolverine traveling back in time to an alternate past to unite the original X-Men with their younger selves to change a pivotal historical event and prevent the extinction of mutants by Sentinels?

The critically acclaimed 2014 superhero blockbuster featuring a desperate journey through time to avert a dystopian future for mutants is indeed X-Men: Days of Future Past (Review). This ambitious cinematic adaptation sees the consciousness of Wolverine, portrayed by Hugh Jackman, sent back from a bleak, Sentinel-dominated future to 1973. His mission is to unite the younger versions of Professor X and Magneto with their future selves' guidance and prevent Mystique from assassinating Bolivar Trask, the creator of the mutant-hunting Sentinels. This pivotal event, if prevented, would alter history and save mutantkind from extinction.

The film successfully merged the cast of the original X-Men trilogy with the younger ensemble from X-Men: First Class, creating a unique cinematic experience that bridged two generations of mutant heroes. Directed by Bryan Singer, who helmed the first two X-Men films, it was praised for its intricate plot, impressive visual effects, and strong performances. Its narrative drew inspiration from the iconic 1981 comic book storyline of the same name by Chris Claremont and John Byrne, which similarly explored a grim future and the desperate measures taken to prevent it.

X-Men: Days of Future Past served as a soft reboot for the franchise, effectively retconning several events from previous films and opening up new possibilities for future storylines. It was a critical and commercial success, lauded for its ability to balance intense action sequences with compelling character development and its nuanced exploration of themes like fate, free will, and prejudice. The film is often considered one of the strongest entries in the X-Men cinematic universe, offering a thrilling and emotionally resonant tale of sacrifice and hope.