Geoff Keighley’s Summer Game Fest 2025 was full of big announcements, but none made a statement quite like Mundfish, developers of 2023’s Atomic Heart. After announcing last week that the studio was expanding to have its own publishing branch, the team made not one, not two, but three more announcements at SGF. These were Atomic Heart 2, another new game called The Cube, and their first title as a publisher, ILL, developed by Team Clout Inc.
The Atomic Heart 2 Steam page describes it as “an action-adventure role-playing game set in a living world, rich with possibilities and a heavy emphasis on the story, role-playing elements, and player freedom. The sequel to Atomic Heart relates new events unfolding in the retrofuturistic universe of an alternate history. This time, the action takes place on a global scale.”
You can watch the trailer on the official Mundfish YouTube channel or below.
The second of Mundfish’s announcements was The Cube, an MMO RPG Shooter set in the newly established Atomic Universe. Here is how the game’s Steam page describes it:
“A giant, levitating Cube with rotating rows and edges. Hidden within is an unknown equation capable of altering the laws of reality. Can you survive another turn?
Check out the trailer below, or watch it on YouTube.
The Cube promises players an ever-shifting world with RPG-shooter gameplay, including multiple biomes, boss fights, quest lines, and NPCs all wrapped up with an intriguing narrative.
Their third announcement came later in the show, a delayed haymaker in the game ILL, a grotesque-looking first-person shooter. Check out the trailer here or on YouTube, but maybe not while you’re eating!
The game’s Steam page describes it as a “narrative-driven first-person survival horror game” that features “intense body horror with an advanced dismemberment system, dynamic enemy behavior, complex weapon mechanics, an immersive interactive world, and strategic survival and crafting, all contributing to an unforgettable visceral journey into despair.”Â
No release date was given for any title.
Mundfish is certainly making the most of their success with their first release, Atomic Heart, which still has its fourth and final DLC to come. While the announcement of a sequel so soon is quite surprising, and The Cube was a complete unknown, it is the subtler announcement of the larger Atomic Universe that has us at GSC excited for this studio’s future.
Are you excited by the announcement of Atomic Heart 2? What are your thoughts on The Cube? Let us know in the comments.
