Fortnite Chapter 2 Season 4 Nexus War has been announced and it brings Marvel superheroes to join the fight against Galactus. Season 4 is live now and will last till November 4.Fortnite Chapter 2 Season 4 Nexus War has been announced and it brings Marvel superheroes to join the fight against Galactus. Season 4 is live now and will last till November 4.