Indie developer Ephemera Games has dropped a massive double-whammy of news for anime action fans. Not only has their highly anticipated debut title, Kernel Hearts, locked in an official release window for September 2026, but players won’t have to wait until autumn to get another taste of the action. An updated, feature-packed demo is officially heading to Steam Next Fest on June 15th.

Published by Whitethorn Games, this unique multiplayer co-op roguelike action RPG tasks players with a rather ambitious to-do list: eliminate legions of angels, scale the Tower of Babel, and transform into a magical girl to literally dethrone God.

If you like your hack-and-slash gameplay mixed with deep customisation and high-stakes teamwork, this is definitely one to keep on your radar.

Slay God, Upgrade Your OS, and Bond with Allies

In Kernel Hearts, you control a member of the M.A.H.O.U. Unit, fighting to save a post-apocalyptic world currently drowning in ashes. The game effortlessly blends fast-paced, combo-heavy action with classic roguelike mechanics.

Here is what you can look forward to when the full game drops later this year:

• Co-Op Chaos: Team up with up to four friends in online multiplayer co-op to take down massive biblical monsters and intense domain guardians.
• Magical Transformations: Dispel the Heavenly Curse to temporarily unlock your true, devastating magical girl form and turn the tide of battle.
• 256KB of Customisation: Between runs, return to your lab holdout on the outskirts of humanity to spend your hard-earned rewards, equipping up to 256KB of custom stat-altering chips to your Unit’s MAHOU.OS.
• Forge Deep Bonds: It’s not all endless fighting; you can interact with the unique inhabitants of the tower and give them gifts to deepen your relationships.

Catch the Fresh Demo at Steam Next Fest

If you missed the initial playtests or the early alpha builds, the upcoming Steam Next Fest on June 15th is your perfect entry point. Game Director Akira recently shared that the development team has been working hard to address player feedback from earlier versions. The upcoming Steam Next Fest build promises a heavily updated demo featuring crucial quality-of-life improvements, tighter mechanics, and a much cleaner look at what the final product will offer.

The full game is shaping up to be an absolute treat for anime fans and roguelike veterans alike. Mark your calendars for the demo next week, and get ready for the full launch this autumn!

Kernel Hearts will officially launch in September 2026 across PC (Steam and Epic Games Store), PlayStation 5, Xbox Series X|S, and Nintendo Switch.

Source – https://kernelhearts.com/

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