
A former special forces operative is sent to uncover a government cover-up tied to a secret viral experiment. As he explores a hidden underground lab and tracks the last two survivors, he realizes the facility conceals even darker secrets.
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About

A third-person survival horror action game set in dark, atmospheric underground environments, blending psychological suspense with intense combat.
The story follows Adam, a former special forces operative assigned a top-secret mission: investigate a supposedly abandoned underground bio-research facility and extract evidence proving the government’s involvement in funding a viral development program—one that spiraled out of control and killed thousands.
What begins as a simple data retrieval job quickly turns into a dangerous search for answers. Most of the facility’s personnel are dead—casualties of brutal emergency protocols. Two scientists are missing, and Adam must track them through dark, hazardous corridors and storm-drain tunnels.
As Adam follows their trail, unsettling signs and unexplained events make him question the true nature of his mission—and his own connection to the facility.
Estimated playtime: approximately 4 hours for a standard playthrough.

Combat: Attack enemies directly with firearms, melee strikes, and evasive maneuvers in fast-paced encounters.
Executions: Crush and smash weakened enemies with brutal takedowns for maximum impact.
Weapons: Unlock new weapons as you progress.
Health: Restore your strength using limited medical injections found along the way.
Boss Battles: Confront powerful bosses, each with distinct attack patterns and strategies.

Ammunition can become low at times, You can explore your surroundings to gather some extra ammo and materials that allow you to craft additional rounds and health injections whenever supplies begin to run out.

AI-Driven Protagonist & True Companion:
Adam is brought to life with an advanced AI system, making him feel and act like a real companion throughout your journey. He reacts to situations, shares his thoughts, engages you directly as the player, and sometimes even breaks the fourth wall. Every conversation, reaction, and decision adds depth to the adventure—and you can customize how much Adam interacts with you, tailoring the experience to your preference.
Original Story & Atmosphere:
Unravel a unique, unpredictable narrative filled with psychological horror and mystery.
Stunning Visuals:
Explore atmospheric environments with high-quality graphics and immersive effects.
Diverse & Challenging Levels:
Encounter new hazards, puzzles, and enemies in every area for a consistently fresh experience.
Blending Real and Virtual Worlds:
The game creatively mixes real-world interaction with the virtual environment, requiring you to think beyond the screen to solve certain puzzles and challenges. Some enigmas can only be solved by combining clues from both realities, offering a truly unique gameplay twist.
Not an Imitation:
Enjoy innovative ideas and mechanics—ENTITY: THE BLACK DAY is not another clone.

Supported Languages 🌍:
English, العربية, Русский, 中文(简体), 日本語, Deutsch, Español (España), 한국어, Português (Brasil), Polski, Français, Italiano, Español (Latinoamérica), 中文(繁體), Nederlands, Bahasa Melayu, Čeština, Dansk, Suomi, Magyar, Norsk, Português (Portugal), Română, Svenska, Türkçe

Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, Arabic, French, Italian, German, Spanish - Spain, Czech, Danish, Dutch, Finnish, Hungarian, Japanese +13 more
Engagement
Hours played at review time, across 44 reviews with recorded playtime.
Reviews
Themes across 44 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
This game starts off great. It's an SCP style horror game with a good atmosphere. The gameplay feels solid, and the shooting mechanics seem decent. Unfortunately, that's where the positives end. As you progress, the game quickly starts to fall apart. It constantly holds your hand instead of letting you learn from your mistakes. It also takes control away from the player by handling core mechanics for you. For example, sometimes it gives you a flashlight, while other times it switches to night vision. You have no control over when or how these are used. That became the breaking point for me during the sewer level. The game automatically toggles your night vision as you pass certain triggers, but it's bugged. If you take one wrong turn, you're suddenly running through pitch black tunnels, hoping you can find your way back to where the game decides to turn your vision on again. Since you also have to activate switches in this section, the bug became a complete progress blocker. On top of that, the game has graphical issues, with textures that frequently fail to load. The developer told me I needed 8 GB of VRAM instead of 6 GB. I have 8 GB of VRAM, and the rest of my hardware is more than capable of running the game. The final nail in the coffin for me was the political messaging. I play games to get away from real world politics, not to have them inserted into the experience. If that's your thing, fine, but it pulled me out of the game completely.
Interesting concept and story. Linear singleplayer horror 3rd person FPS with mini puzzle games. Game itself needs polishing, from gameplay, movement, same animations, and dialogue. The voice lines are a bit too animated and cliché. Has a direct to video acting vibe to it. Runs well, with max settings on 4K using a 5800X3D, RTX 4090. Definitely has promise. Looking forward to its development!
The game runs well and is a good experience. The story is rather lacking, we get almost no information over the playthrough. Since the actual shooting gameplay is not terribly strong this causes the whole experience to stumble somewhat. The atmosphere is good, but more details of the story would have been a benefit.
The game have good concept,good graphic at least in 4K,and that's it,there is no back story,of any events,It's literally 3 to 4 hours run,reason i pick the key for 12 euro.Anyway for now i saying yes,looking forward to free DLC story.I would suggest to pick this one around 10$ maybe next year,once DLS is droped.
The Black Day immediately surprised me with something I rarely see in horror games: a genuinely entertaining protagonist. Right from the intro, the main character introduces himself and explains the controls to the player. It is a small detail, but it instantly gives the game personality. Throughout the adventure, the game repeatedly plays with the idea that the character possesses some form of artificial intelligence. While everything is obviously scripted, the execution is so well done that it becomes one of the game's greatest strengths. One of my favorite moments happened when I found a keypad door and walked away from it. The protagonist questioned whether I had really failed to notice that only three buttons showed signs of use and pointed out that there were only six possible combinations to try. "It can't be that difficult," he remarked. Moments like this appear throughout the game and constantly add charm to the experience. The presentation is strong overall. The visuals look good, the sound design supports the atmosphere well, and the story remains intriguing enough to keep you wondering what exactly you are trying to uncover and why these pieces of evidence matter. My only real criticism concerns the pacing. Some highly energetic and action-heavy sequences are followed by slower, more monotonous sections that do not always transition smoothly. At times it feels as if the game struggles to connect these moments naturally. Even so, this is a creative and memorable horror experience that does several things differently from the usual indie horror formula. The protagonist alone makes it worth checking out. --- [b]Step deeper into the darkness — discover more horror gems and nightmares.[/b] 💀 Follow our curator page: [url=https://store.steampowered.com/curator/45809849-Sanctum-of-Horror/]Sanctum of Horror[/url] 🎮 Watch the horrors unfold live on [url=https://twitch.tv/cobargaming]Twitch[/url] 📺 Full playthroughs & reactions on [url=https://youtube.com/@CobarGaming]YouTube[/url]
I have been playing this on and off. As you can see, not very much. Look, I like the game. Unreal 5 is just stunning. I like the plot, regardless of how it's laid out. The game is fun, at least to me. Slow and easy, plenty to see and explore at your own pace. I don't mine the AI in this game or any game to be honest. What do people think they have been using for the past 25 years when they use their GPS system or Siri or Microsoft's Cortana? But look, I did see a review that stated you have to scan a QR code to continue in the game. I see the Devels did respond and quickly to clear that up. But look Devels, in my honest opinion, you guys should patch that part out of the game. As a cyber security student and seeing that, almost made me delete this game and ban you guys forever. Even though the developers likely intended this as an innocent Alternate Reality Game (ARG) mechanic, it introduces serious security risks and terrible user behavior reinforcement: Conditioning Bad Habits: This mechanic trains users to blindly scan untrusted, unverified QR codes out of curiosity or a desire to progress. This directly leaves users vulnerable to Quishing (QR phishing) attacks in the real world. Malicious Link Redirection: While the link currently goes to a developer clue page, if their domain lapses, gets hijacked, or undergoes a DNS poisoning attack, that QR code could easily begin redirecting players to a site hosting malicious payloads, automated drive-by downloads, or credential harvesting pages. I recommend this game still. Just use the code instead of using your person phone on a QR. Code: 0710
game is under construction, the developers are providing updates and they are working hard on this game, i think it has great potential.
Fun game. Great dialogue and humor.
<<<warte auf Fortsetzung, sehr gut 👍 >>>
The game is ok. Sorry, best I could come up with. Honestly, the price tag is far above what the actual game delivers. It was a struggle just to play it. There's not even any settings options for you to change. Had to sit through the trashiest soundtrack ever, no choice. 3rd person angle can't be adjusted nor can you switch between which shoulder you prefer. Basic in-game settings that are completely non-existent. So annoying that I just left it on pause & walked away for like 3-4 hrs to get away from it. Movement, combat & in game mechanics are awful. Hit reg' is absolutely all over the place. Story is bland at best but will admit had some comical moments within it. All in all. Extremely average game with basic movement mechanics. It would be better served as being around the $5-$10 mark as opposed to it's full price but if your looking for cheap dodgy shooter to tide you over till something else comes along then this is the dodgy game for that
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Trends
Modeled estimate over time, reconstructed from Steam's monthly review histogram.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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