In addition to working on Atomic Heart 2, Mundfish is also working on a new multiplayer RPG shooter that is set within the same world of Atomic Heart. They're calling this one The CUBE and it's currently also in development for Steam and consoles.
This game is set after the events of Atomic Heart. A mysterious new threat, a giant levitating structure known simply as The Cube has appeared and is the apparent cause of "increasingly dangerous phenomena." The Cube is an ever shifting place that is full of dangerous enemies, with its greatest mystery sitting within the Cube's core.
“At Mundfish, we were the first in the industry to implement a technology that allows thousands of objects to move and rotate simultaneously across massive stretches of terrain — online and in real time. No other game has ever done this before.” shared Robert Bagratuni, Founder and CEO of Mundfish, and Game Director of The CUBE. He continues, “This became possible thanks to our innovative proprietary split-rendering system, which redefines how motion is handled in interactive environments. The technology delivers maximum performance even under extreme load. In The CUBE, physics, ballistics, and gravity feel completely natural — but under the hood, it’s powered by rocket science. The system enables seamless transitions, precise object tracking, and synchronized multiplayer in a living, ever-evolving world. It’s a true technological breakthrough.”
Key Features of The CUBE
• A new deep story with an impactful narrative set in the Atomic Universe.
• Set in a uniquely designed world shaped as a massive, levitating Cube with constantly rotating rows and edges that create unexpected scenarios and combinations of the environment as well as new combat challenges.
• Rich exploration of the massive world. Vast expanses and diverse biomes to explore, filled with exciting quests and hidden secrets.
• Deep and persistent progression. Constant character development and customization that reward individual playstyles. Even failure won’t halt player progression.
• Intense combat and tactical depth. Dynamic battles with a wide choice of weapons & skills, deadly enemies, powerful bosses, and strategic preparation.
• An innovative Split-Rendering System that transforms how motion is handled in interactive environments. This proprietary technology powers the dynamic world of The CUBE, enabling seamless transitions, intelligent object tracking, and multiplayer synchronization.
Key Features of The CUBE
• A new deep story with an impactful narrative set in the Atomic Universe.
• Set in a uniquely designed world shaped as a massive, levitating Cube with constantly rotating rows and edges that create unexpected scenarios and combinations of the environment as well as new combat challenges.
• Rich exploration of the massive world. Vast expanses and diverse biomes to explore, filled with exciting quests and hidden secrets.
• Deep and persistent progression. Constant character development and customization that reward individual playstyles. Even failure won’t halt player progression.
• Intense combat and tactical depth. Dynamic battles with a wide choice of weapons & skills, deadly enemies, powerful bosses, and strategic preparation.
• An innovative Split-Rendering System that transforms how motion is handled in interactive environments. This proprietary technology powers the dynamic world of The CUBE, enabling seamless transitions, intelligent object tracking, and multiplayer synchronization.


