That’s Not My Neighbor

In That’s Not My Neighbor, Nacho Sama blends eerie horror with sharp-eyed detective work, asking a simple yet spine-chilling question: can you tell who’s human and who’s a perfect mimic?

Can You Spot the Real From the Replica in That's Not My Neighbor?

You’re stationed at the entrance of an apartment building, hired by the D.D.D.—that’s the Doppelganger Detection Department. Your mission is to keep the residents safe by identifying monstrous doppelgangers trying to sneak in, disguised as ordinary tenants.

These creatures don’t just look like your neighbors; they act like them, speak like them, and even know personal information. But one wrong move could let a monster inside. Or worse, get an innocent person "eliminated."

The Faces Behind the Door: Neighbors or Nightmares?

The people entering your building aren't always who they appear to be. You’ll encounter two main types of characters:

Real Neighbors: These are the actual tenants, ordinary people with quirks and flaws. They might forget their ID, lose their access card, or mix up their apartment number, but they mean no harm. Misjudging them can lead to tragic consequences.

Doppelgangers: These are the master imitators, monsters in disguise. They replicate faces, voices, and even memories with chilling accuracy. But they’re not perfect. Watch closely for small inconsistencies: a missing mole, too many eyes, odd behavior. Catching these subtle flaws is the only way to stop them.

Everyone looks familiar, but trust is a luxury you can’t afford.

That's Not My Neighbor

Controls and Gameplay Mechanics

How to play That's Not My Neighbor?

Mouse - Interact with all elements (documents, buttons, phone, windows).
Buttons - Accept or reject entry.
Emergency button - Instantly eliminate confirmed threats.
Phone - Call tenants to verify their identity.
Checklist & folders - Track information and organize your investigations.

The Tools you can use

Security window for visual inspection.
Tenant data lists.
Phone line for confirmation.
Emergency system to neutralize threats instantly.
Hatch for document exchange.

Watch out for the smallest details

Doppelgangers aren’t your average villains. They mimic everything: physical appearance, voices, and even emotions. Sometimes they’ll slip, an extra eye, a wrong detail, a twitch too strange to ignore. Your job is to catch those flaws before they catch you.

But beware: neighbors can forget things, too. Not everyone who acts suspicious is a monster. Every decision has weight, and mistakes are costly.

Tips for Surviving the Doppelganger Threat

Stay sharp and notice small details to spot doppelgangers.
Always check IDs and apartment numbers carefully.
Use the phone to verify suspicious visitors.
Keep your checklists and folders organized.
Press the emergency button as soon as you confirm a doppelganger.
Balance speed and accuracy when inspecting documents.
Learn from mistakes to improve your skills.

Who's Knocking at the Door?

Not all monsters hide in the shadows; some smile through the peephole. That's Not My Neighbor will challenge how closely you look, how much you trust, and what you’re willing to risk to protect a building full of strangers. Someone’s knocking; will you let them in?