That's not my Neighbor

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Check the papers, study the face, and decide who gets through the door.

Platforms: PC, Linux
Price: Paid
Rated: Very Positive on Steam (89% of 4,772 reviews)
Players: 1
Made by: Nachosama Games
Released: 2025

What frightens You are the doorman of a 1955 apartment block while doppelgangers copy the tenants. Each visitor at the window must be checked against papers and records; some faces are subtly wrong and some are openly monstrous, and letting the wrong one in has bloody results.
Content: blood, grotesque faces.

That's not my Neighbor is a hand-drawn doorman simulator from Nachosama Games set in 1955, when doppelgangers have started copying people. You check each visitor's documents and face against the tenant records and decide who comes in and who is reported to the Department of Doppelganger Detection. Small mistakes in a face are the warning, and letting a double inside goes badly.

About That's not my Neighbor

That's not my Neighbor is a 2025 release from Nachosama Games. It is 1955, doppelgangers have become unusually common, and the Department of Doppelganger Detection has put you behind the window of an apartment complex as its doorman. Every visitor claims to live there. Your job is to decide whether to let them in, turn them away, or have them taken by the D.D.D.

Play happens at a single desk. A visitor appears at the glass, and you have their entry request, their ID, a tenant list, a phone and a folder of records. You compare names, apartment numbers, ID numbers and faces, and look for what is off: an extra eye, a wrong mouth, a detail that does not match the file. The art is hand drawn and cartoonish, and the doubles range from almost right to plainly grotesque.

The horror is in the doubt rather than in fighting. You can never relax with a visitor who looks normal, and the store art makes clear that a mistake ends in blood. Campaign Mode has different endings depending on how you perform, Arcade Mode is for chasing a score, Nightmare Mode is a harder test, and Custom Mode lets you design your own tenants.

It sits next to No, I'm not a Human and Shift At Midnight in the small group of games about letting strangers in and judging who is human, but it is closer to a paperwork game: quick, desk-bound and built on attention to detail. It suits players who like observation games such as I'm on Observation Duty more than chase-and-hide horror.

How to play That's not my Neighbor

Start Campaign Mode and read the rules for the day: what papers a visitor must have and what counts as valid.
When a visitor appears at the window, open their entry request and ID and compare the name, apartment and ID number with the tenant records in the data folder.
Study the face on the screen against the photo for anything wrong, such as extra eyes, an odd mouth or a changed feature.
Let the visitor in if everything matches, deny them if the paperwork is wrong, or call the D.D.D. if you think they are a doppelganger.
Finish the shifts to reach an ending, then try Arcade, Nightmare or Custom Mode.

Screenshots

A bald visitor in a suit with extra eyes on his face waits at the doorman's window, beside the phone, tenant list and data folder

The desk with an entry request and a tenant file for Angus Cipriani, with photos, apartment number and phone number to compare

A green-skinned doppelganger with black eyes and sharp teeth at the window says Greetings, mortal

Tips

Check the paperwork first; a wrong apartment number or ID is quicker to spot than a subtle face.
Compare the face feature by feature with the photo rather than taking it in as a whole.
Keep the tenant list in mind as the days go on, since visitors claim to be neighbours you have already seen.
Custom Mode is a good place to learn what kinds of changes the doubles can have.

Questions

Is That's not my Neighbor a horror game?

Yes, in a desk-bound way. You decide who is a real tenant and who is a doppelganger, many of the doubles are grotesque, and the art shows bloody results when one gets in. It has no chases or combat.

What platforms is That's not my Neighbor on?

It is sold on Steam for Windows and Linux. We did not find an official console or phone version of this game; similarly named apps in the stores are by other makers.

Does That's not my Neighbor have multiple endings?

Yes. The Steam page says Campaign Mode reaches different endings based on your performance.

What game modes does it have?

Campaign, Arcade, Nightmare and Custom Mode, where you can design your own tenants.