Kernel Hearts Game Info - Developer, Platforms & More
What Kernel Hearts is, who made it, how it is sold and what content shipped at launch.
Published September 18, 2026 · Last updated September 18, 2026
Quick Answer: What Is Kernel Hearts?
Kernel Hearts is a co-op roguelike action RPG by Ephemera Games, published by Whitethorn Games and released on Steam for Windows on September 18, 2026. Four magical girls of the M.A.H.O.U Unit climb the Tower of Babel, fight biblical angels, and attempt to dethrone God. Two floors, three characters and two bosses at launch, with 44 achievements to chase.
| Fact | Detail |
|---|---|
| Developer | Ephemera Games |
| Publisher | Whitethorn Games |
| Platform | Windows (Steam) |
| Released | September 18, 2026 |
| Co-op | 1-4 players, drop-in |
| Current content | 2 floors / 3 characters / 2 bosses / 44 achievements |
The Core Loop in One Paragraph
Enter the tower, fight angels whose weakness you know, double your damage with the right chips, collect fragments, upgrade your MAHOU.OS at the laboratory hub, then spend the quest-earned summon item on the floor guardian. Beat the guardian, take its key, open the next floor. Transform to dispel the Heavenly Curse and reveal your true magical girl form. The whole game is that sentence, repeated with escalating stakes.
Fight biblical angels, load chips on MAHOU.OS, transform to dispel the Heavenly Curse and climb higher.