Mundfish has released a brief teaser trailer for the upcoming DLC for its alternate history first-person shooterAtomic Heartand revealed that it will be coming sometime this summer. Even before the game launched in February 2023, the developer had confirmed that it was planning on releasing additional content, though it wasn’t clear when. At this point, it’s also not knownhow long theAtomic HeartDLC will be, despite Mundfish joking on April Fool’s that it would be six hours long.

Atomic Heartreleased amid a few controversies, including Ukraine calling for the game to be banned, various performance issues, and even an accusation that it intentionally featured a racist Soviet cartoon from the 60s and 70s calledNu, Pogodi!. In the months since, developer Mundfish has released multiple patches to slowly fix the problems players have encountered and add support for other languages.

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Although the game received mixed reviews from both critics and players, it does have a vocal fan base that has been excited to hear more about this mysterious DLC.Atomic Heartcan be completed in approximately 15 hours, and many people are eager to continue their adventure in the dystopian world of Facility 3826. Mundfish has released the first teaser trailer for theAtomic HeartDLC, which ends by mentioning that it will be coming this Summer 2023.

Not much is revealed in theAtomic HeartDLC trailer, and footage of the actual game only takes up eight seconds of the video. It begins underwater, bringing to mind The Academy of Consequences from the end of the game, though the structures shown seem to be different than the ones in that location.

The camera then moves above water, revealing a scene reminiscent of the unsettling Limbo that Agent P-3 enters a few times in the main game, or at the very least demonstrating some gravity-defying tech that keeps walkways and buildings afloat without support or visible mechanisms.

In addition to DLC, Mundfish has also confirmed that it is alreadyplanning a sequel forAtomic Heart.The only question is how long fans might need to wait before they can get their hands on it. Development ofAtomic Heartbegan in 2017, meaning it took nearly six years for the indie studio to complete it, and the product that released had serious issues, including crashes, environment glitches, and other game-breaking bugs. Hopefully, with the experience gained during the development ofAtomic Heartand its subsequent patches, the DLC and sequel will be less problematic for players at launch.

Atomic Heartis currently available on PC, PS4, PS5, Switch, Xbox One, and Xbox Series X/S.