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94% positive of 163 · Very Positive · Live from Steam
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You are Arenda Finch—fifteen years old, wealthy beyond measure, and newly exiled from your former school. Dunkenwood House takes you in, but its halls hide the darker side of privilege. Humanity or demonic nature. Love or desire. Every choice shapes the person you become.
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Review score: 95% on 2026-11-01 → 94% today (163 reviews)
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Dear players,A major content update for Malleus Cocconum: The Heiress has now begun.At the current stage, you can continue to experience Antonio’s route and the existing main story content. This update also includes an improved Glossary system, which is now av…
We've just fixed a new issue that was preventing some achievements from unlocking.Now, all achievements for the Antonio route should be working properly!If you previously encountered issues, try reloading a relevant save or replaying the related branch — the a…
We've just released a small patch addressing the following issues:Fixed an issue where some oil paintings could not be unlocked. To access the fixed paintings, you’ll need to start a new playthrough.Fixed a bug where the “Graduate” Steam achievement would not …
Dear players,The Antonio route update is almost ready. We’re currently fixing the final bugs and polishing stability to make sure the experience is smooth for everyone.For this reason, the update will be released on Tuesday, September 23, instead of this Frida…
Dear players,We’ve officially begun updating the Antonio route. Chapter by chapter, the story will unfold, and the full route will be completed on September 19.For our international community: the English version of Antonio’s major update is scheduled for Nove…
Dear players, Thank you for your continued support of Malleus Cocconum: the Heiress! We'd like to take this opportunity to share our current development progress and what lies ahead in future updates. Current Progress We are now focusing on Chapter 3 of the st…
Dear players:Steam Trading Cards and Badges are now available for Malleus Cocconum: The Heiress.The collection includes 9 unique Trading Cards, along with Steam Badges.How to Obtain Trading CardsPlaying the Game: Trading Cards will drop automatically as you pl…
Dear players,The main story of The Heiress has now been fully completed.Thanks to the recent feedback from players, we have also fixed a number of issues affecting the game experience, including certain CGs not unlocking properly, some endings being too diffic…
Dear Players,Thank you for your patience and continued support.With the completion of the Mika Route, the main story of the game has now reached its conclusion. In the second half of this year, we will officially release the English version of the game and con…
The English version of the Antonio route is now fully uploaded. The story is complete and playable through to the ending.The language is still being refined. This update focuses on improving clarity and tone, and I’ll continue polishing the writing going forwa…
Dear players,With the full Antonio Route now complete, we have officially entered the producting phase of the Mika Route. This new route will explore deeper truths, reveal long-buried secrets, and expand the world of Malleus Cocconum far beyond what has been s…
This is a small content update, introducing four new short stories, several new features, and a first-time language selection screen. Below is a full overview of what’s included in this update:New Content: Four Short StoriesYou can now read four new stories, e…
Dear players,We’ve finally completed all endings of the Antonio route.This is the first game I’ve ever made, and I know it’s far from perfect. There are many places that feel immature, many things I wish I could’ve done better. Early Access was never meant to …
⚠️ Content WarningThis update contains strong adult themes which may be disturbing to some players, including but not limited to:Violence and crime depictionsSexual violence and suggestive contentReligious horror imageryShocking visual and audio effectsEthical…
Dear players,I’m Dan, the lead developer of this game. We’re currently working on Chapter 4, and with this post, I’d like to speak to you more personally—about what’s been happening behind the scenes, and what lies ahead.Over the past few months, a lot has cha…
Happy Lunar New Year, everyone! May this Year of the Snake bring you good fortune, happiness, and an amazing gaming experience! Thank you for supporting Malleus Cocconum, and we’re thrilled to have you with us on this journey. March 3-10: We’ll be part of the …
Dear Players, Thank you for playing Malleus Cocconum: the Heiress and for the love you’ve shown us! We wholeheartedly welcome you to share your passion for this game through video commentary, fan art, written works, and other creative expressions! These creati…
Does not work on Steam Deck. Results from Valve's own testing.