The grave course of events set in motion by Thanos that wiped out half the universe and fractured
the Avengers ranks compels the remaining Avengers to take one final stand in Marvel Studios' grand
conclusion to twenty-two films, Avengers: Endgame. The title "Endgame" was not only heard from a
comment from Dr. Strange in Avengers: Infinity War but it was also mentioned in Avengers: Age of Ultron.
In that movie, Tony Stark says that the alien invasion from the first Avengers movie is the endgame.