During Summer Game Fest 2025, developer Mundfish made a double announcement that has Atomic Heart fans excited for the future. Not only is Atomic Heart 2 now officially in development for PC and consoles, but the studio also revealed a brand-new multiplayer RPG shooter titled The Cube, set within the same alternate-history sci-fi universe.
A new trailer debuted during the event gave fans their first glimpse of Atomic Heart 2, confirming that the sequel will continue the franchise’s trademark mix of first-person shooting, retro-futuristic aesthetics, and RPG mechanics. The world of Atomic Heart remains one where advanced robotics and AI were meant to build a utopia, but instead sparked a devastating rebellion. In this sequel, players will once again step into the chaos to prevent humanity's final collapse.
The original Atomic Heart launched in 2023 and was met with strong critical reception, including an 8/10 review from IGN, who praised it as "a deeply ambitious, highly imaginative, and consistently impressive atompunk-inspired attempt at picking up where the likes of BioShock left off.” Since launch, the game has surpassed 10 million players and received multiple DLC expansions, with one more still in development.
In addition to the main sequel, Mundfish unveiled The Cube, a standalone project set several years after the original Atomic Heart. This multiplayer RPG shooter places players inside a giant floating Cube, the source of bizarre phenomena threatening the world. The game promises an evolving world, tactical combat, and a deeper exploration of the mysterious Atomic Universe.
Key Features of The Cube:
- A Deep, Original Narrative: A standalone story set after the events of Atomic Heart, complete with high stakes and cosmic mystery.
- Dynamic Environment: The Cube constantly shifts with rotating walls, moving edges, and unpredictable terrain changes present players with ever-changing combat scenarios.
- Exploration and Biomes: Players will explore a wide variety of biomes, each filled with quests, hidden lore, and environmental hazards.
- Persistent Progression: Character growth continues even through failure. Customize your loadout and tailor your playstyle with deep progression options.
- Strategic Combat: Battle through waves of enemies and bosses using a mix of ranged weapons, powers, and tactical preparation.
- Cutting-Edge Tech: The Split-Rendering System brings smooth multiplayer integration, natural-feeling physics, and seamless transitions between combat and exploration.
Both games are currently in development for PC and consoles, and while no release dates were provided, the announcement signals big things ahead for fans of Atomic Heart’s distinctive worldbuilding.
Whether you're eager to dive deeper into the dystopian madness of Atomic Heart 2 or explore the ever-shifting enigmas of The Cube, Mundfish is doubling down on their unique brand of science fiction storytelling and immersive action.
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