《Sherlock Holmes: Night Stalker》Steam Next Fest Demo Announcement

Dear Detectives,

<Sherlock Holmes: Night Stalker> will be participate in Steam Next Fest: Autumn 2025. After generating buzz at Gamescom 2025 in Cologne, we’re excited to open a limited demo to the global community. If you try the game and give us your suggestions, you will have a chance to win a Sherlock Holmes Labubu.

⏰Event period

October 13 at 10:00 AM PDT (UTC-7) to October 20 at 10:00 AM PDT (UTC-7)

Playtime：1.5 hours per account (Counted from the first launch)

Language：English and Simplified Chinese (demo build)

🎮What’s in the demo

The demo focuses on the Baskerville Manor chapter and includes main storyline content along with core systems and features:

1、AI FREECHAT: Real-time conversations with AI-controlled NPCs — interrogate them, crack their Heartlocks, present items as evidence, manipulate or even disguise your identity to obtain clues.

2、Open-world Investigation: Explore locations such as Baskerville Manor, the moor, and the swamp to investigate and collect evidence.

3、Deduction & Validation: Use the Deduction System to combine fragmented clues into decisive new leads and validate your case hypotheses.

From the developers

Special Note: Only the dialogue text and voice lines are generated in real time by an AI model. All programming and art assets are entirely handcrafted.

How to join

1、Visit the Steam store page to join the limited-time demo.

2、During the Steam Next Fest, click “Play Now” to access the demo.

3、Players who participate in the test and post bugs or suggestions on the Steam Community will have a chance to win a Sherlock Holmes Labubu.

Important notes

⚠ Minimum requirements: Windows 10/11 64bit + i5-8700k+ GTX 1650 + 8GB RAM

⚠ Recommended requirements: Windows 10/11 64bit + i7-10700k + RTX 3060 + 16GB RAM

⚠ Cloud saves are not supported, and your demo progress will not carry over to the full version

We look forward to witnessing your powers of deduction amid the mist of the manor!

Sincerely, GamercuryAI

About the Demo

<Game Introduction>

“When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.”　　　　　　　　　　　　　　　　　　　　　　　　　　 ——Sherlock Holmes

This detective game features core gameplay powered by the latest AI model, delivering a brand-new immersive interactive experience.As Sherlock Holmes, you will engage in battles of wits with dozens of AI-driven characters, uncover clues, and solve intricate puzzles. Every clue must be obtained by you—the renowned master detective—through conversations, interrogations, emotional persuasion, exploration, and deduction.

Whether major or minor, every character has a complete backstory, personality, experiences, and relationships, and will respond to your questions with real-time emotional expressions and reactions. The unprecedented immersion will make you feel as if you have been transported back to 19th-century Victorian London, where you—and only you—can alter the course of the story as the great detective Sherlock Holmes.

(Special Note: Only the dialogue text and voice lines are generated in real time by an AI model. All programming and art assets are entirely handcrafted. Our goal in integrating AI was to enhance NPC intelligence—making their behavior and responses feel more lifelike—and to create a new kind of immersive experience that blends narrative and deduction, rather than using AI as a tool to develop the game itself.)

<Storyline>

On the mist-shrouded outskirts of 19th-century London lies the mysterious Baskerville Manor. The corpse of Sir Charles Baskerville is discovered in a nearby marsh—eyes wide open, hand clutching his chest, his face frozen in terror. There are no visible wounds, but the ground bears the tracks of a monstrous hound.

“It must be—the Baskerville curse! That demonic hound has returned!”

“Am I doomed to this fate too? No… I don’t want to die—Ahhhhh!”

Shadows loom within the manor, while danger festers beyond its walls. A suffocating fear grips everyone like the hand of a demon on their throats. Soon after Holmes arrives at Baskerville Manor at the request of his friend Maud, a series of new murders erupt—mutilated bodies in the marsh, the corpse of a woman in a neighboring estate’s fountain… Are these seemingly unrelated crimes connected? What hidden truth lies behind the Baskerville curse? As the investigation unfolds, the truth begins to surface, until—

“Sherlock, you once said that every brick of Baskerville Manor whispers… Yet some secrets drown even beneath the roar of the Thames.”

“Then we’ll need sharper ears—like a certain doctor who insists on carving Christmas pudding with a scalpel.”

【Game Features】

====== Free Chat! Immersive Detective Simulation ======

No dialogue choices, no rigid scripts—you can freely chat with NPCs: negotiate, interrogate, coax, compliment, threaten, or tempt… anything you can think of! NPCs are no longer just lines of code—they are “alive,” infused with AI-driven personalities. Witness their reactions in real time: a suspect feigning calm under interrogation, hastily covering up lies when caught, gossiping about neighbors’ secrets, or shifting blame onto others… AI brings every character to life. You’ll never know if they’ll help you solve the case—or stab you in the back!

====== Unlock Secrets, Reveal Inner Truths ======

Everyone has secrets they guard closely. Find a way to pry them open, and you move closer to the truth! Each “locked heart” represents a key clue. Gather critical clues and connect them to generate new, vital insights. In the end, armed with crucial evidence and your unmatched conversational skills, confront the killer and crack the case!

====== Hundreds of Items, Use as Evidence or Gifts ======

Show your evidence to leave the culprit speechless, exposing every lie! The world is filled with hundreds of items—you can use them as proof or gifts. Give a scalpel to a doctor? He’ll praise you as a kindred spirit. Gift the same to a lady? You might get slapped and scolded, “Are you cursing me?!” AI reacts to each character in real time—blushing, angry, smirking, or even drawing a gun. Flirt or provoke, it’s all about your survival instincts!

====== AI Twists! Unlock Multiple Hidden Endings ======

“Think catching the killer is the end? AI is secretly laughing at your naivety!”
Accuse someone of being the murderer? Tomorrow’s headline might read: “Holmes Disgraced! Frame-Up Scandal Revealed.” Hide a key piece of evidence? Ten years later, a mysterious smile from the “late” baron might flash across the street… AI shapes the story based on your words, completed tasks, collected clues, and items, leading to multiple, unpredictable endings.
—Shh… did you hear the dogs barking in the swamp?

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