With the launch of Fortnite OG, aka Chapter 4 Season 5, this one-month-long season reverses course and puts players on the Chapter 1 map with major weekly changes. Here's how it's all going to work.

Over the course of the month, the island will morph through various other iterations from Chapter 1, going from Season 5 to Season X. The island won't be exactly the same as it was then, though.