Mundfish has officially announced Atomic Heart 2, the sequel to its 2023 first-person shooter. The game is currently in development and will be powered by Unreal Engine 5. It is scheduled for release in 2026 on PC, with more platforms expected to be confirmed at a later date.
The first Atomic Heart introduced players to a stylized, retrofuturistic version of the Soviet Union where advanced robotics and mutant experiments collided in a violent uprising. The sequel will continue in the same universe, expanding on the events of the first game while introducing new storylines, characters, and gameplay systems.
According to Mundfish, Atomic Heart 2 aims to enhance the player experience by offering a more expansive open world and deeper RPG mechanics. The studio says players can expect more freedom in exploration and a greater variety of activities scattered throughout the game world. A notable change is the overhaul of the combat system. Players will now be able to use both hands independently during combat, combining glove-based abilities with melee and ranged weapons. This system allows for more flexible and dynamic combat scenarios, encouraging experimentation with different combinations of powers and weapon types.




The story of Atomic Heart 2 is described as a direct continuation of the original, featuring familiar faces alongside new characters. The narrative will reportedly delve deeper into the game’s alternate-history world, revealing new layers of its lore and uncovering hidden aspects of the universe that were only hinted at in the first installment. While specifics about the plot remain under wraps, the game is expected to maintain the same blend of tension, mystery, and dark science fiction themes that defined its predecessor.
Alongside the announcement of Atomic Heart 2, Mundfish also revealed a new project titled The CUBE. Unlike the single-player focus of Atomic Heart, The CUBE will be a multiplayer RPG shooter set in a distinctive game world. The studio says the title will feature narrative-driven missions, character progression, and an evolving world where players can work together to complete objectives and uncover its story.

The debut trailer for Atomic Heart 2 offers a first look at some of the environments, enemies, and gameplay mechanics. While the footage is still early, it gives a sense of the visual fidelity expected from a game developed with Unreal Engine 5.
Mundfish has not yet confirmed a specific release date, but more updates are expected over the coming months as development progresses.