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Malleus Cocconum: The Heiress

Malleus Cocconum: The Heiress

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.

Released Jan 15, 2025 Developer Domus Aurea Platforms Windows · Mac · Linux DarkMysteryRPGPsychological HorrorVisual Novel
View on Steam ↗ $21.99 (US · as of 2026-05-18)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.

95.1%positive164 reviews
Recommended · 12 found this helpful

“So far, this visual novel's been pretty solid. It definitely fits the 'dark, mystery, psych. horror.' tags. Main character is relatively intelligent and the other characters have been interesting so far. I'd liked some sort of flow chart so I can know what, if anything, I've…”

— a player, Steam review · 8 hrs played
Recommended · 11 found this helpful

“WE NEEEEEEEEED CHAPTER THREE”

— a player, Steam review · 10 hrs played
Recommended · 4 found this helpful

“Incredible atmosphere, great characters, intriguing plot - this is a really good VN.”

— a player, Steam review · 10 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. History through 2026-07 via SteamCharts; self-collected from the Steam API since Aug 2026.

37all-time peak
0 5 10 2026 No data collected for this period 7 avg · Jul 2026

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

35achievements
38.2%median completion
10.2%rarest: The Humanitarian
84.9% of players 66.0% of players 62.0% of players 58.2% of players 56.7% of players 56.5% of players 54.0% of players 46.5% of players 44.8% of players 44.8% of players 44.3% of players 42.1% of players 41.2% of players 40.5% of players 40.4% of players 39.4% of players 39.3% of players 38.2% of players 36.4% of players 33.6% of players 32.5% of players 32.1% of players 31.7% of players 31.6% of players 20.5% of players 20.2% of players 20.0% of players 19.2% of players 19.1% of players 18.7% of players 18.1% of players 17.8% of players 17.6% of players 14.8% of players 10.2% of players 84.9% 0% most earned rarest
Almost everyone has
84.9%New Term — Arrived at Dunkenwood House
66.0%Finished Chapter I — The Passion
62.0%Finished Chapter II — The Covenant
Rarest badges of honor
10.2%The Humanitarian — Hidden achievement
14.8%The Collector — Collect all stamps
17.6%The Butterfly — Hidden achievement

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jul 03, 2026
The main story has now been fully completed

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 cer

Jun 30, 2026
A look at our plans for the English release

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 w

Jun 08, 2026
Major Update in Progress

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 upd

Dec 19, 2025
The English version of the Antonio route is now fully uploaded

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

Dec 02, 2025
The English Version of the Antonio Route Will Be Released on December 14

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 e

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-26.

GenresIndie, RPG, Early Access
Player tagsDark · Mystery · RPG · Psychological Horror · Visual Novel · Gothic · Female Protagonist · Story Rich · Multiple Endings · Drama · Early Access · Indie (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Family Sharing
LanguagesEnglish, Simplified Chinese, Traditional Chinese
Achievements35
Minimum system requirements (PC)

Minimum: OS *: Windows 7 Processor: Intel Core 2 Duo Memory: 2 GB MB RAM Graphics: Integrated graphics Storage: 4 GB available space