That's Not My Neighbor Nightmare Mode Guide: Quiz Answers and Survival Tips

2025-12-16

Nightmare Mode isn't just a difficulty spike; it is a fundamental reimagining of That's Not My Neighbor. Gone are the letter grades and the leniency of the Arcade Mode. In this twisted version of 1955, you face a binary reality: identify the Doppelganger correctly, or face immediate execution.

This guide provides the essential data you need to survive. We have stripped away the fluff to give you exact Evil Chester quiz answers and a corrected Nightmare Neighbors list.

introduction to That's Not My Neighbor nightmare mode

How to Unlock Nightmare Mode in That's Not My Neighbor

Accessing Nightmare Mode is straightforward and does not require completing prior challenges. Once you have the full version of the game, available on Ozgames.io, simply select it from the main menu alongside options such as Arcade Mode. Introduced in a 2024 update and refined in subsequent patches up to 2025, this mode becomes available without prerequisites, allowing immediate immersion into its darker narrative. Players should note that enabling settings like the trypophobia filter can adjust visual elements for comfort, making it accessible even for those sensitive to certain horror tropes.

Key Differences in That's Not My Neighbor Nightmare Mode

Nightmare Mode introduces several transformative elements compared to Arcade Mode, significantly increasing the challenge:

  • The doorman's office features gore-covered walls and pulsating eyes, creating an intensely immersive horror atmosphere.
  • Any single mistake results in an immediate jumpscare and game over, with scoring limited to pass or fail rather than letter grades.
  • The 21 residents are replaced by "Nightmares" distributed across three floors, categorized as demons, Lovecraftian horrors, and gods.
  • Doppelgangers exhibit ultra-subtle flaws, requiring a primary focus on documentation rather than obvious mutations.
  • New special visitors include Evil Chester for quizzes, the Killer Clown for card games, and the safe Mask Ghost.

Complete List of Nightmare Mode Neighbors

Understanding the 21 Nightmare Neighbors of That's Not My Neighbor game is essential for success, as their unique traits and details form the basis for verification. Below is a detailed table outlining each one's key information, including apartment, ID, occupation, and distinctive appearance features. Cross-reference these with in-game folders and the daily visitor list to avoid fatal errors.

Floor 1: The Demons

Floor 1 Neighbors in That's Not My Neighbor Nightmare Mode

Floor

Name

Apartment

ID Number

Occupation

Roommate

Key Appearance Features

1

Xezbet Xerbeth

F01-01

332569945968

Soul Eater

Drugia Fleuretty

Head scar, small nose, big smile, two tattoos, scar on left cheekbone

1

Drugia Fleuretty

F01-01

116682111989

Nightmare Designer

Xezbet Xerbeth

24 fingers, nine eyes, small nose, earrings, hands on head

1

Barbatos Barrabam

F01-02

896689886989

Human Hunter

Exael Lanithro

15 thorns, small nose, two tattoos, big teeth, small eyes

1

Exael Lanithro

F01-02

235325968986

Torturer

Barbatos Barrabam

15 needles, dotted eyebrows, prominent chin, tired eyes, sharp teeth

1

Abducius Morail

F01-03

763764748675

Mutilator

Lives Alone

Scar on nose, piercings, stretched eyelids, big smile

1

Lilith Lilitu Lilit

F01-04

172535271725

Witch

Anazareth Anazarel

Small pointed nose, pointed ears, earrings, five tattooed eyes, fangs

1

Anazareth Anazarel

F01-04

435612349876

Create Curses

Lilith Lilitu Lilit

Small pointed nose, seven horns, earrings, three tattoos, sharp teeth

 

Floor 2: Lovecraftian Horrors

Floor 2 Neighbors in That's Not My Neighbor Nightmare Mode

Floor

Name

Apartment

ID Number

Occupation

Roommate

Key Appearance Features

2

Chaugnar Faugn

F02-01

456989632368

Occultist

Nyogtha Z'mog

Trunk, one tattoo, two tusks, big ears

2

Nyogtha Z'mog

F02-01

986463213811

Gravedigger

Chaugnar Faugn

Round nose, several scars, curly hair, round head, thin eyebrows

2

Zoth Ommog

F02-02

456325638947

Ritualist

Lives Alone

Big smile, big nose, little hands on chin, pointy head

2

Shub Niggurath

F02-03

156894755236

Causes Famine

Lives Alone

Forehead tattoo, small nose, big smile, seven snakes, round head

2

Yog Sothoth

F02-04

689547464823

Vampirism

Quachil Uttaus

Long nose, nose ring, shaded eyes, short hair, fangs

2

Quachil Uttaus

F02-04

636463636463

Causes Misfortune

Yog Sothoth

Nine eyes, levitates, halo, speaks telepathically

 

Floor 3: The Gods

Floor 3 Neighbors in That's Not My Neighbor Nightmare Mode

Floor

Name

Apartment

ID Number

Occupation

Roommate

Key Appearance Features

3

Yan Luo Wang Diyu

F03-01

798654298466

Princess of Death

Orcus Dis Pater

Small nose, teeth in cheeks, thin eyebrows, no pupils, sharp teeth

3

Orcus Dis Pater

F03-01

632525984964

Collects Skins

Yan Luo Wang Diyu

Mask, bright eyes, long smile, dark skin

3

Ishtar Ereskigal

F03-02

945269858896

Causes Pests

Lives Alone

Long nose, long smile, round head, curly hair, big eyes

3

Teutates Taranis

F03-03

789586413294

Annihilator

Ah Puch Xilbalbá

Face tattoos, serious gaze, long nose, sharp teeth, long hair

3

Ah Puch Xilbalbá

F03-03

564895213647

Bone Breaker

Teutates Taranis

Mask, round head, short hair, round ears, small eyes

3

Dagda Crom Cruach

F03-04

965845863219

Soul Scarecrow

Izanami Yomi

Wears a hat, mouth stitches, a big head, and a mask

3

Izanami Yomi

F03-04

235689986532

Deforms Faces

Dagda Crom Cruach

Long hair, big nose, round chin, pale face

These details, drawn from in-game resources and community-verified sources, help pinpoint discrepancies in potential impostors.

How to Spot Doppelgangers in That's Not My Neighbor Nightmare Mode

Like Doppelgangers in Arcade Mode, Doppelgangers in Nightmare Mode can look shockingly real, but they usually slip up with tiny details, an extra horn, a missing tattoo, or eyes that don’t quite match.

  • Start by checking the daily guest list. If someone isn’t on it, don’t let them in.
  • Cross-check ID numbers, job titles, and name spellings against the official files; one wrong digit or a small typo is a major red flag.
  • Call the phone number on record to confirm their address.
  • Use the question button to ask simple, specific things the real person would answer consistently; inconsistent replies often reveal an impostor.
  • For special cases like Hoon Man, the viral masked figure with oozing features, pay close attention to surface textures and tiny hidden marks; those subtle details usually expose the fake.

Special Visitors in Nightmare Mode: Chester the Clown Questions and More

Nightmare Mode introduces special visitors that break the usual rules, adding unpredictability and higher stakes to each encounter.

  • Evil Chester is a twisted version of the clown who presents a short quiz. Failing does not end the run, but answering correctly unlocks rewards.
  • The Killer Clown challenges players to a card game. Winning guarantees safety, while losing results in an instant game over.
  • The Mask Ghost can appear up to three times and is always safe to let in.
  • Hoon Man and other mysterious figures may also show up, requiring close inspection of distorted masks, black ooze, and subtle visual clues to confirm whether they are genuine.

Chester's Quiz Answers: Regular Mode Breakdown

For those encountering Chester in standard play, his quiz consists of six fixed questions. Precise typing is crucial, as errors result in dismissal. Here are the complete Chester's quiz answers:

1. What is the meaning of life, the universe, and everything? 

Answer: 42 (A nod to The Hitchhiker's Guide to the Galaxy, often searched as "That's Not My Neighbor 42 meaning").

2. What is the scientific name of the Australian animal that drastically changes its appearance when removed from its natural habitat? 

Answer: Psychrolutes marcidus.

3. What is the name of the only sport that allows you to punch your opponent in the face because they capture a piece? 

Answer: Chess boxing.

4. At least how many times do you have to fold a 0.01 mm thick sheet of paper to cover the distance between the Shire and Mordor? 

Answer: 38.

5. The key is hidden. EQEY QBXM MBIA MWXM XUES MCMS BQIX WUEW AHWY MV? (Decoded: What is the seventh planet?) 

Answer: Uranus.

6. According to F.S.M., global warming is a consequence of the fact that since the 19th century, the number of _ _ _ _ _ _ _ decreased. 

Answer: Pirates.

Mastering these ensures the "Best in Class" achievement.

Evil Chester Quiz Answers: Nightmare Mode Edition

In Nightmare Mode, Evil Chester ups the ante with more obscure queries. Success grants the Prodigious Mind achievement and a special badge. The exact Chester the Clown questions and answers are:

1. Last name of the man behind the true face of the mask, most known to internet users. 

Answer: Fawkes.

2. Which number would give you the victory in a contest of writing the largest number with the conventional rules of the Roman numeral system? 

Answer: MMMDCCCLXXXVIII.

3. Name of the hairiest lieutenant of World War II. 

Answer: WOJTEK.

4. Temple where once a god caused the largest pandemic ever seen in all the great darkness beyond. 

Answer: Zul'Gurub.

5. The clave name of the multicellular organism with the ability to clone anything it touches with its rhizome. 

Answer: SCP038.

6. How many numbers are formed with the digits of the cardinality of the parts of a set with the first perfect and happy number of elements? 

Answer: 45360.

These puzzles draw from diverse trivia, rewarding thorough preparation.

How to Survive Nightmare Mode: Step-by-Step Strategies

How to Survive Nightmare Mode in That's not my neighbor

To survive Nightmare Mode effectively, follow this structured protocol for each visitor:

  1. Review the daily guest list for presence.
  2. Conduct a visual scan, counting specific features like eyes or horns.
  3. Cross-check documents for ID mismatches or spelling errors.
  4. Dial the apartment phone to confirm occupancy.
  5. Use the question button to expose contradictions.
  6. Admit verified residents or summon D.D.D. for suspects.

Practice in Arcade Mode first to hone skills, and restart rounds liberally since there's no cumulative penalty. This approach minimizes risks in the unforgiving environment of That's Not My Neighbor Nightmare Mode.

Full Achievement List for Nightmare Mode

You cannot earn rank-based achievements (like "Better Than Henry") here. Focus on these eight:

  1. Wake Up!: Survive an entire run (allow all correct neighbors, kill all impostors).
  2. Prodigious Mind: Ace Evil Chester's Quiz.
  3. Boo!: Encounter the Mask Ghost 3 times.
  4. Headache: Get killed by "The Entity" (Triggered by killing 2 innocent neighbors).
  5. Share The Secret: Meet the VIP character "42".
  6. Peaching: Meet the VIP character "Peach".
  7. In My Restless Dreams: Meet the VIP "Nurse".
  8. Collector: Unlock all other achievements in the game.

Conclusion

Navigating That's Not My Neighbor Nightmare Mode demands precision, but with these Chester's quiz answers and survival strategies, players can confidently tackle its horrors. Whether unraveling the enigma of figures like the Hoon Man or mastering subtle doppelganger detection, this guide equips you for success. For the latest experiences, head over to https://ozgames.io/thats-not-my-neighbor to play That's Not My Neighbor on Ozgames.io.

Frequently Asked Questions

  1. How to unlock Nightmare Mode in That's Not My Neighbor? Select it directly from the main menu in the full game version.
  2. What are Chester's quiz answers? Refer to the detailed lists above for both regular and Evil variants.
  3. Who is the Hoon Man? A masked, oozing doppelganger variant often encountered in challenging modes.
  4. What's the That's Not My Neighbor 42 meaning? It's the answer to the first regular Chester quiz question, referencing a famous sci-fi concept.
  5. How to survive Nightmare Mode? Follow the step-by-step verification process and prioritize document checks over visuals.