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Kernel Hearts

7 months agoSource: Steam

Kernel Hearts is a co-op action RPG with roguelike structure in which up to four Magical Girls climb the Tower of Babel. Ephemera Games combines fast combo battles, changing builds and a post-apocalyptic world with a story that blends Japanese influences and Argentine culture.

Developer
Ephemera Games
Publisher
Whitethorn Games
Genre
Action-RPG, Roguelike
Game modes
Online-Koop, Singleplayer
Steam user reviews
78 % positive · 243 reviews
At Steam
View store page
On this page 8 sections

What is Kernel Hearts?

Kernel Hearts is an action RPG with roguelike structure and online co-op for up to four players. As part of the M.A.H.O.U. unit, you fight your way through the living Tower of Babel, defeat angel-like creatures and try to save a world sinking into ash.

The story is set in a post-apocalyptic version of Patagonia. Ephemera Games combines Japanese-inspired magical girl aesthetics with elements of Argentinian culture. This mix shapes both the world and the four main characters.

Updated 17.09.2026

Sources
Kernel Hearts shows the post-apocalyptic world of Babel
Babel is the last refuge of a world sinking into ash. · Ephemera Games / Whitethorn Games / Xbox Wire Image source

Release

7 months agoSource: Steam

Kernel Hearts was released on Sep 17, 2026. The release followed a free PC demo that gave an early impression of combat, builds and co-op in spring 2026.

On Xbox and PC, Kernel Hearts is also available on Game Pass at launch.

  1. PC

    First in-depth gameplay and reveal trailer.

    Source
  2. PC

    Free demo coming to Steam.

    Source
  3. All platforms

    The release date of Sep 17, 2026 is confirmed.

    Source
  4. PC

    Release for PC.

    Source
  5. PS5

    Release for PlayStation 5.

    Source
  6. Xbox Series

    Release for Xbox Series X|S.

    Source
  7. Switch 2

    Release for Nintendo Switch 2.

    Source

Updated 17.09.2026

Sources

Platforms

Kernel Hearts is natively available for PC, PlayStation 5, Xbox Series X|S and Nintendo Switch 2. On PC, the game is offered via Steam and the Epic Games Store.

A version for PlayStation 4, Xbox One or the original Nintendo Switch is not part of the announced platform lineup.

Updated 17.09.2026

Sources

Gameplay

Combat combines attacks, spells and movement abilities into fast combos. Every run changes your build, while a guardian boss waits at the end of each level. After an expedition, the unit returns to a save point and invests rewards in chips for the MAHOU.OS.

Fernet, Spika, Laika and Dolce are deliberately played differently. Fernet relies on swords and spirits, Spika on disciplined katana attacks, Laika on heavy hits, and Dolce on a fighting style that draws on dance and performance. The campaign can be played fully solo, but is also designed for cooperative runs with up to four players.

Another core mechanic is the Magical Girl transformation. It briefly breaks the Heavenly Curse and activates a particularly powerful form. Between battles, you also deepen relationships with the residents of Babel.

Updated 17.09.2026

Sources
The four members of the M.A.H.O.U. unit in Kernel Hearts
Fernet, Spika, Laika and Dolce differ not only visually but also clearly in their combat styles. · Ephemera Games / Whitethorn Games / Xbox Wire Image source

Trailer

System requirements

On PC, Kernel Hearts requires at least Windows 10 64-bit, 8 GB RAM, a GeForce GTX 1060 or comparable graphics card, and 15 GB of free storage. For the recommended settings, Steam lists 16 GB RAM and a GeForce RTX 2060 or GTX 1660 Ti.

According to the store, the minimum requirements target 1080p at low to medium settings. In online co-op, performance may vary depending on the situation.

The details apply to PC.

Minimum

Operating system
Windows 10 or later, 64-bit
Processor
Intel Core i7-9750H @ 2.60 GHz or equivalent
RAM
8 GB RAM
Graphics
NVIDIA GeForce GTX 1060 or equivalent
Speicher
15 GB available

Recommended

Operating system
Windows 10 or later, 64-bit
Processor
Intel Core i7-10700 or AMD Ryzen 5 3600 or equivalent
RAM
16 GB RAM
Graphics
NVIDIA GeForce RTX 2060 or GTX 1660 Ti or equivalent
Speicher
15 GB available

Editorial details

Updated 17.09.2026

Sources

Similar games

Game series

Kernel Hearts is an independent brand from Ephemera Games. The project began in 2020 as a game jam entry and then grew over several years into a full co-op action RPG. Publisher Whitethorn Games has supported the game since the early development phase.

Updated 17.09.2026

Sources
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