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The Heart of Darkness
Explore the Sanctuary of Darkness, a mysterious dungeon beneath the Kingdom of Haillard. Obtain the soul of the Cursed Saintess waiting in its depths and unravel the truth of this strange world in this sinister turn-based RPG.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via SteamSpy as of 2026-05-14.
“DISCLAIMER! Make sure you download the uncensored patch from Kagura Games website before you start playing!!! Any saves made previous to installing of the patch will be unusable! Before the patch, parts of the game will seem incomplete and character art and cutscenes will be…”
— a player, Steam review · 16 hrs played“QRD: It's an okay game. An average experience, to be blunt. There's nothing truly memorable about it, but simultaneously it's 'good enough' to warrant a positive review. I'll preface by saying that I don't care about Souls games in general. This means that I might be lacking…”
— a player, Steam review · 20 hrs played“Long story short: Did I like the game? Yes, I did. In fact, after I’d played it two times for a total of maybe five hours I proceeded to finishing it by playing from somewhere around 7 PM until 9:30 AM. It is the first hentai ("H") game I've played. I wasn't sure what to expect,…”
— a player, Steam review · 19 hrs playedLatest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
The Imperial Gatekeeper by Tengsten
https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/32398519/199f0630bd359a0a0735472ac9caeb8d3a0b23d1.png We're delighted to reveal that we will be releasing The Imperial Gatekee
Magical Girl Celesphonia Slated for May 7!
https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/32398519/c99467a8cb9f01e9e1b677e2dab90c1e47adb014.jpg We're thrilled to reveal that we will be releasing Magical Girl Celespho
The Heart of Darkness Trading Cards and More!
https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/32398519/72b6149ffabb30ff209645980c11139a2fa0878b.jpg We're excited to announce that we have enabled Steam Community Items for
Castaway of the Ardusta Sea by baron sengia
https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/32398519/dfbfa97848b3ce2e60fd4446d7f5f7c91b9949e5.png We're ecstatic to reveal that we will be releasing Castaway of the Ardus
The Heart of Darkness Is Now Available!
https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/32398519/f19bedc92a539395bf02a9173c339fec0890e4c4.png We're thrilled to reveal that The Heart of Darkness by BigWednesday is n
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-14.
| Genres | Adventure, Indie, RPG |
| Player tags | RPG · Singleplayer · Indie · Anime · JRPG · RPGMaker · Souls-like · Dark Fantasy · Memes · Psychological Horror · Combat · Adventure (SteamSpy community voting) |
| Features | Single-player · Steam Cloud · Family Sharing |
| Languages | English, Japanese, Simplified Chinese |
| Estimated owners | 20,000 – 50,000 (SteamSpy) |
| Official site | https://www.kaguragames.com/ |
Minimum system requirements (PC)
Minimum: OS *: Windows® 7/8/8.1/10 Processor: Intel Core2 Duo or better Memory: 4 GB RAM Graphics: DirectX 9/OpenGL 4.1 capable GPU DirectX: Version 9.0 Storage: 4 GB available space Additional Notes: 1280x768 or better Display. Lag may occur from loading menus or maps. Turn off other programs before running the game.