That's not my Neighbor Beginner Tips - Documents, Calls, and Doppelganger Checks

That’s not my Neighbor by Nachosama Games is a doorman job simulator about catching impostors before they enter your apartment building. The trick is that the game rarely asks for one big deduction. It asks for ten small checks in a row, and a missed detail can undo an otherwise careful shift.

Content warning: The game uses cartoony presentation with horror, body horror, and blood themes. This guide keeps those elements non-graphic and focuses on documents, calls, and decision habits.

Treat every visitor as a case file, not a face at the window. A real neighbor should survive every check: list status, papers, names, numbers, job, date, appearance, and apartment call. If one part does not fit, pause before pressing a door button.

Essential Tips

1. Start With Today’s List

The list is your first filter, not your final answer.

Ask whether the person is expected today before you touch the buttons. If the visitor is missing from the list, that is already a serious problem. If they are on the list, keep checking anyway; a doppelganger can still pass the first test and fail a later one.

2. Demand Both Papers

A clean run starts with complete paperwork.

Do not rush past a missing ID or entry request. The office job is built around comparing papers to files, so an excuse for a missing document should make you suspicious. Complete papers do not prove the visitor is safe, but incomplete papers give you a clear reason to stop.

3. Compare Names Everywhere

First names, last names, and file labels all matter.

Read the names on both documents, then compare them against the resident folder. A single wrong letter, swapped surname, or mismatch between papers is enough to change the call. This is one of the easiest checks to do slowly and one of the easiest to botch when you are hurrying.

4. Check the D.D.D. Marks

Official-looking papers still need the right markings.

Look for the expected D.D.D. logo or mark on the documents before accepting them as valid. A fake paper can look close enough that your eye jumps to the name and photo first. Make the logo part of the same routine every time so you do not rely on memory under pressure.

5. Read the ID Number and Date

Small numbers are common hiding places for bad papers.

Match the ID number against the resident file and check whether the ID is expired. Numbers are less dramatic than strange faces, but they are perfect traps because they look boring. If you only skim the photo and name, you are giving the impostor a free lane.

6. Verify the Job

A job line can betray an otherwise neat visitor.

When the entry request lists a job, compare it to the resident file. The wrong occupation or an explanation that does not fit the resident should slow you down. This is especially important when the face and name look normal.

7. Study the Whole Face

Do not rely only on the written appearance notes.

Use the folder photo as the real comparison point. Look at eyes, eyebrows, mouth, nose, face shape, spacing, and small proportions. The written notes may not mention the exact feature that is wrong, so check the complete face before deciding.

8. Use the Phone Before You Trust Perfection

A perfect visitor can still fail the apartment check.

If every paper and face check looks good, call the apartment anyway. The key danger is the person at the window looking correct while the real resident is already home. A phone call is the extra layer that catches what the documents cannot.

9. Review Before Pressing a Button

Your last ten seconds are often worth the run.

Before you let someone in or call for extraction, re-check the papers, face, list entry, and phone result. This does not need to be slow forever; it needs to be consistent until the routine is automatic. Most losses come from skipping the final pass because one early check felt convincing.

10. Treat Nightmare Mode as a Perfect-Run Test

The harder mode punishes a missed doppelganger immediately.

Arcade Mode gives you the bad news at the end. Nightmare Mode can end as soon as a doppelganger gets through, and real-neighbor mistakes are also much harsher. Learn the checklist in Arcade before using the same routine under Nightmare pressure.

Doorman Workflow

1. Greet the visitor mentally as unknown: Do not decide from the face alone, even if the character looks familiar.
2. Check today’s list: Confirm whether the resident is expected, then keep going instead of treating the list as proof.
3. Collect the papers: Make sure both ID and entry request are present before comparing details.
4. Match identity details: Compare first name, last name, ID number, job, and expiration date against the folder.
5. Inspect official marks: Look for the proper D.D.D. marking on each document.
6. Compare the face: Use the folder photo for a full feature check, not just the written notes.
7. Call the apartment: Check whether the real resident, a roommate, or no one answers in a way that fits the situation.
8. Do one final pass: Re-read the suspicious parts before choosing the door or D.D.D. action.

This order keeps you from bouncing randomly between tools. It also makes mistakes easier to catch because every visitor goes through the same pattern.

Document and Appearance Checks

Check	What to Compare	Why It Matters
Today’s list	Visitor name against expected arrivals	Being expected is useful but never enough alone
ID	Name, number, date, photo, official mark	A tiny mismatch can expose bad paperwork
Entry request	Name, job, official mark, wording	The request may contradict the file
Resident folder	Photo, listed details, job, apartment	This is the baseline for the whole decision
Phone	Apartment answer against the visitor’s story	The real person may already be inside
Face	Full proportions and features	Some differences are subtle, especially later

When the game feels stressful, read from top to bottom instead of inventing a new route. The goal is not to be fast at first. The goal is to stop giving doppelgangers untested openings.

Mode Advice

Arcade Mode is the best training room because it teaches the full office loop in one workday. You still pay for bad decisions, but the mode’s report helps you learn from what slipped past you. Use the details after a failed or messy run to identify which category you skipped.

Campaign Mode asks for more patience because consequences can carry across days. If someone is removed or a doppelganger reaches an apartment, the building state can change. Play Campaign with a slower version of your Arcade checklist until you know how the current build handles days and saves.

Nightmare Mode is not just a darker skin. The neighbors can look strange even when they are legitimate, and the mode is built for players who already know how the normal office works. Do not use obvious monster design as your only rule. Apply the same document, face, and call routine, then be stricter because one accepted doppelganger can end the attempt immediately.

Custom Mode is useful for practice once you understand the base flow. Designing tenants can help you think about what a folder needs to communicate: a photo, identifying traits, and details that documents can be checked against.

Common Mistakes to Avoid

1. Do not trust a familiar face - A correct-looking neighbor can still have a bad document, wrong job, or apartment contradiction.
2. Do not skip the phone because the papers look perfect - The apartment call catches cases that paperwork alone may not reveal.
3. Do not check only the written appearance notes - The folder photo can show feature differences that notes do not spell out.
4. Do not ignore expiration dates - An expired ID is easy to miss because it feels like background text.
5. Do not treat today’s list as proof - The list is one check in a longer chain.
6. Do not press a button while documents are still open questions - Resolve each mismatch before acting.
7. Do not bring Arcade habits into Nightmare unchanged - Nightmare leaves less room for admitted doppelgangers and real-neighbor mistakes.
8. Do not chase speed before consistency - A fast routine that skips one category is worse than a slower routine that catches every mismatch.

Summary

Category	Top Tip
First check	Start with today’s list, then keep verifying
Papers	Compare names, marks, ID numbers, dates, and jobs
Face	Match the whole folder photo, not just the notes
Phone	Call apartments before trusting a perfect visitor
Nightmare	Use the same checklist with less tolerance for risk