About this game

⭐VERY IMPORTANT DOLCE ANNOUNCEMENT ⭐

About the Game

Kernel Hearts is a unique blend of action RPG and roguelike elements with multiplayer co-op. As part of the M.A.H.O.U Unit, you are tasked with climbing the Tower of Babel, eliminating the angelic creatures in your path as you dethrone God and save a world drowning in ashes.

ONE MORE GOD REJECTED

Mix and match your attacks, spells, and movement with unique powers during each run to unleash devastating combos on the enemies you encounter.
Punch biblical monsters in the face with up to four friends. Each level culminates in an intense boss fight against the domain's guardian

EQUIP & CUSTOMIZE YOUR UNITS

After each expedition, you will return to the last memory backup in a laboratory located on the outskirts of humanity's last holdout.
Spend the rewards from each run to unlock and equip up to 256KB of chips onto your Unit MAHOU.OS, and customize them as you see fit.

TRANSFORM INTO A MAGICAL GIRL

Harness the strength of the tower to dispel the Heavenly Curse from yourself, unleashing a devastating attack on nearby foes and attaining your true form for a short period.

BOND WITH YOUR ALLIES

Interact with the tower's unique inhabitants and give them gifts to deepen your bond.

Latest news

• Announcements·17 Sept 2026Official

  Kernel Hearts is now out!

  Kernel Hearts is Out Now! Hello, everyone! Akira, Game Director of Kernel Hearts, here. I’m incredibly happy to announce that Kernel Hearts is finally out, with crossplay between all PC versions! Thank you for all your feedback and support since we first announced the game almost two years ago. Your feedback, reviews, and all the love you showed the demo helped us shape Kernel Hearts into something we truly love, and I sincerely hope you’ll love it too. Kernel Hearts is a piece of our souls. We poured everything we had into our very first game, and we can’t wait for you to finally experience it. Thank you for joining us on this journey. Enjoy!! {STEAM_CLAN_IMAGE}/45227059/b08bf1de11042f2c2d2765af31e80ffa755c0746.png
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• Patch Notes·17 Aug 2026Official

  Kernel Hearts Release Date + Demo Update

  Hey everyone, Akira here, Game Director of Kernel Hearts. Today, I'm very happy to announce that Kernel Hearts will be launching one month from now, on September 17th! To celebrate, we decided to update the Demo one last time before release. Japanese Voice Acting Japanese VO has been added to the game! Make sure to start a New Game to enjoy all the story scenes with the new Japanese voice acting. Attending these recording sessions was a dream come true for me. Watching the actors bring these characters to life was incredibly fun, and easily one of the highlights of this year. Balance We've listened to a lot of your feedback, and as a result we've done some pretty significant rebalancing across both the game's combat and economy. For combat, we've adjusted most Mementos and Relics so they scale better with player level, while also rebalancing them to make every choice feel more rewarding to use. Some of the ones that rely more heavily on scaling might still miss the mark a little in the Demo because of its shorter runs, but hopefully the overall feeling of getting stronger throughout a run feels much better now. Keep in mind that the Demo only has 2 floors, while the full game has around 7! Things are expected to get considerably crazier later in a full run than what we're able to show during Demo sessions. We've also adjusted enemy numbers throughout the game to make encounters feel less spongy while still maintaining the level of challenge we're aiming for. On the economy side, we've made exploring and fighting the random enemies around the map much more rewarding. They now have a significantly higher chance of dropping Lost Wishes, alongside an overall rebalance of chest loot tables. Languages We've removed the placeholder translations and are now only keeping the professionally translated languages in the Demo. Some players asked us to keep the placeholders because they still helped them play the game even if they knew little or no English, but we also don't want...
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• Announcements·4 Jun 2026Official

  Kernel Hearts releases on September 2026!

  Kernel Hearts is launching in September 2026! Hello everyone! Akira, Game Director here. I wanted to thank everyone who played the demo. This is the first game we’ve ever made, and seeing so many positive comments and so much helpful feedback has been amazing! As you might have guessed from the title, Kernel Hearts is launching in September 2026! Making this game has been a dream come true for all of us, and we hope you’ll join us for this final stretch as we push to make the game something we can truly be proud of. What you experienced in the demo is just a small glimpse of the full game! Demo Update Coming Soon Speaking of the demo, a new update is coming soon! We’ll be part of Steam Next Fest on June 15, and we’re preparing a big update that addresses most of the issues we’ve documented from the demo. Thanks again for all the feedback! We are mostly active on our Discord, where we talk with players every day. Hope to see you there! discord.gg/KernelHearts
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• Announcements·31 Mar 2026Official

  Kernel Hearts Demo is out NOW!

  Hello everyone! Akira, Game Director here. I'm happy to announce that our very first public demo is now available on Steam, featuring 4 player multiplayer co-op. This is our very first game and we've been working on it for the past four years. It would mean a lot to us if you played it. For those who played the previous playtest, first of all, thank you. We invite you to try out the new changes. We feel it's the best the game has ever been, and we can't wait to see you play it. We’ll be waiting for you on our Discord (discord.gg/KernelHearts), where you can talk directly with the devs and the community. Click here to Join the Discord As always, thanks a lot for your support, making games is hard but your support makes it a hell of a lot easier. Hope you enjoy this piece of our soul.
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• Announcements·15 Jan 2026Official

  JOIN THE CLOSED PLAYTEST TOMORROW!!!

  🔥 Third Closed Playtest Starts Tomorrow! 🔥 Hello KernelHeads! Tomorrow we’ll be starting our third closed playtest, and we’re excited to finally put a ton of new changes into your hands. If you’d like to participate, you can sign up directly from the Steam store page 👍 That said, we highly recommend joining our Discord as well: discord.gg/KernelHearts That’s where we: • Answer questions • Chat with the community • Collect feedback in our dedicated forums --- What’s New in This Playtest New Level added before the Seraph fight Relic Drops that appear over time in the map and grant passive bonuses 4 New Mementos, each with 5 unique effects Reworked Lost Souls System — now shared between players and obtainable from Stray enemies Coffins reworked into Purifications More angels, more chaos, and a true test of your build Fully reworked Gabriel & Hanniel boss fights Ping system for multiplayer Emote system for multiplayer Automatic input detection (keyboard / gamepad) Reworked dodge system Multiple UI reworks Sin Events System As the Sin meter fills, random events will trigger across the map Status Effects & Ailments End-of-level Result Screen Featuring your stats… and a funny song by Diego. and there’s a lot more that we probably forgot to mention. --- Thanks again to everyone supporting the game and helping us improve it with your feedback. We’ll see you in the playtest! {STEAM_CLAN_IMAGE}/45227059/e8a1a78c8da57828ff06586ce479bff0f0786220.png
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