Rebellion Developments has announced Atomfall is getting its first major story expansion pack next month.

The new “Wicked Isle” downloadable content is launching for all platforms on June 3rd and will add a whole new location to the game, new characters, new enemies, as well as new weapons, skills, items, and multiple new endings for the main game.

Here’s a rundown on the new content, plus a trailer:

Drawing on the folk horror elements of the game for inspiration, the story expansion is set on Midsummer Island. To cross to the island players must talk to the boat-keeper who can be found on the jetty in Wyndham Village. He will give you information about the island as well as your first Lead.

“Midsummer is located close to the Windscale Atom Plant and as a result the levels of infection in both the people and environment are higher than on the mainland,” explained Ben Fisher, Head of Design at Rebellion. “You are going to meet new enemy factions including pirate bandits and infected druids. To help you survive there are new weapons to be found on the island including a devastating Blunderbuss shotgun, a new bow, cutlass, daggers and the Beekeeper’s Staff. You will also be able to acquire new skills which will aid you on your quest as well as an upgraded metal detector which will enable you find even more loot caches.”

The Leads you uncover in Wicked Isle will open a variety of story treads, some of which create new potential endings for the main Atomfall game.

Included in the Deluxe Edition and in the Deluxe Upgrade Pack and available to purchase separately when released ($19.99), Wicked Isle will be available June 3 on Xbox Series X|S, Xbox One, Windows PC, PC via Steam, Epic Games Store, PlayStation 5 and PlayStation 4. Game Pass subscribers will benefit from a 10% discount.

Atomfall was released in March 2025 for Windows PC (via Steam, the Microsoft Store, and the Epic Games Store), Xbox One, Xbox Series X|S, PS4, PS5, and Xbox Game Pass. Get our review for the game!