If you want to know how to spot doppelgangers Not A Customer style, the answer lies in three core checks: ID inconsistencies, physical anomalies, and impossible grocery requests. Opv Game Studio’s 2026 PSX-style survival horror hit turns the mundane act of ringing up groceries into a lethal game of spot-the-difference. You are a night-shift cashier, and handing the wrong change to a mimic means instant death.
Surviving from 12:00 AM to 6:00 AM requires treating your register like a border checkpoint. Every customer is guilty until proven human. This guide breaks down the exact mechanical tells, behavioral cues, and counter-tool strategies required to beat the game, avoiding the trial-and-error deaths that plague most first playthroughs.
The Grocery Counter Loadout: Know Your Tools
The grocery counter is your fortress. You cannot leave it, but you have complete control over the hardware bolted to it. Mastering these tools is the only way to verify humanity when visual cues fail.
The UV Scanner and Watermark Verification
Pressing the F key brings up your handheld UV scanner. This is primarily used for validating identification cards. A legitimate Oakwood resident ID features a watermark of a pine tree, visible only under UV light. Fakes often feature distorted symbols, bleeding ink, or no watermark at all. Always shine the UV light on the customer's hands; doppelgangers occasionally leave a faint, glowing residue on their fingertips.
The Barcode Reader Anomalies
The scanner does more than ring up prices. A standard grocery item gives a crisp, high-pitched beep. If an item was manifested by a doppelganger to blend in, the scanner emits a low, guttural buzz. Simultaneously, the register screen will display glitching text, usually repeating the word "MEAT." Never bag an item that causes the register to glitch.
The Conveyor Scale
Pay attention to the digital weight readout embedded in the belt. The physics engine is strict. A loaf of bread weighs roughly 1.5 lbs. If the scale reads 80 lbs for a single apple, the entity standing in front of you is hiding anomalous mass inside a fake object. Decline service immediately.
The Under-Counter Shotgun Protocol
Pressing the Spacebar equips the under-counter shotgun. You are allotted exactly four shells per shift. You must only pull this weapon when a fake refuses to leave after you press the "Decline Service" button. Shooting a real human triggers an immediate game over, as the police arrive and arrest you. Reserve your ammo for entities that attempt to vault the counter.
The Interrogation Loop: ID and Roster Checks
Mandatory ID checking begins at 2:00 AM. From this hour onward, every patron must present a card. Treat this phase exactly like Papers, Please—cross-reference every printed detail against the game's established logic.
Validating Expiration Dates and Addresses
The game takes place in June 2026. Any ID expiring before this date is invalid and should be rejected. Next, check the street address. Memorize the three valid streets in the town of Oakwood: Elm St, Maple Dr, and Oakwood Ave. Doppelgangers frequently generate IDs with impossible addresses like "The Woods," "Underneath," or "Behind You."
The Town Directory Phone Calls
You have a rotary phone and a yellow pages book under the counter. If an ID looks visually perfect but your instincts tell you something is wrong, dial the phone number listed on the card. If the real person answers the phone from their home, the creature standing in front of you is a mimic.
Cross-Referencing the Grocery List
Real humans buy logical combinations of items, such as bread, milk, and cereal. Doppelgangers fail to understand human consumption patterns. If a customer places "Red Milk," a single raw onion, and industrial bleach on the belt, they are simulating a shopping trip without understanding the context. Hit the decline button.
ANALYSIS REPORT POSTER: Customer verification protocol and ID checking rules.
Physical and Behavioral Tells of a Fake Customer
The low-poly PSX graphics make spotting subtle facial cues deliberately difficult. However, the developers coded specific, undeniable animations for the fakes. You must observe the customer before you even begin scanning their items.
| Visual Trait | Real Human | Doppelganger |
|---|---|---|
| Blinking | Every 4-6 seconds. | Never, or rapid, unnatural fluttering. |
| Shadow | Casts a dynamic shadow from the fluorescent lights. | No shadow cast, or shadow moves independently of the body. |
| Voice Lines | Muffled, annoyed, or tired sighs. | Distorted, echoing, or repeating your own words back to you. |
| Neck Seam | Smooth texture transition from jaw to collar. | Visible pixel tearing or a dark black line under the chin. |
Facial Distortions and Neck Seams
Always look at the geometry of the customer's neck. Fakes often suffer from "The Glitch," where their character model subtly vibrates. If you look closely at the neck seam, you will see a dark line of missing pixels where the head was improperly attached to the torso.
The Shadow Check
Your register is positioned under a flickering overhead light. Real humans cast a shadow directly onto the conveyor belt. Doppelgangers either cast no shadow at all, or their shadow will slowly reach across the counter toward your hands while the physical model stands perfectly still. If a shadow moves while the customer is stationary, reach for the shotgun.
INFOGRAPHIC: Human vs doppelganger anatomy and visual tells.
Known Doppelganger Variants and How to Survive Them
Not all fakes act the same. As the night progresses, you will encounter specific variants with unique behavioral loops that require tailored responses.
The Smiler
Appearing after 3:00 AM, the Smiler maintains a rigid, ear-to-ear grin that physically clips through its own cheek polygons. Do not engage in dialogue with this entity. If you click the dialogue option "Did you find everything okay?", its aggro meter fills instantly. Decline service, stare directly at the floor, and wait for it to leave. Eye contact exceeding three seconds results in death.
The Mimic Cop
At roughly 4:00 AM, a police officer will enter the store demanding to review your security footage. This is a trap. The real police do not visit the store unless you trigger the silent alarm. Check the badge number on his chest: real Oakwood police badges start with a 1. The mimic's badge always starts with a 0. Deny his request and immediately crouch under the counter.
Late-Shift Escalations (Surviving 3 AM to 6 AM)
The final three hours of the shift introduce environmental hazards that distract you from the interrogation loop.
Power Outages and Ceiling Crawlers
The store will occasionally lose power, plunging the room into darkness. You have exactly 15 seconds to turn around and flip the breaker on the back wall. If a customer was standing at the counter when the lights went out, always use your flashlight to check the ceiling before turning your back. Doppelgangers use the darkness to climb onto the ceiling tiles directly above the register.
COMIC GRID: Late shift escalations including the mimic cop and power outages.
Backroom Breaches
Fakes do not always leave the store when denied service. If you leave the backroom door unlocked, doppelgangers who were turned away will attempt to flank you through the warehouse. Always lock the warehouse door at 2:00 AM. If you hear rattling on the door handle behind you, do not investigate.
Audio Cues: Listening for the Uncanny
Sound design is half the battle in Not A Customer. Real humans make noise. You will hear the automatic doors slide open, followed by the heavy, rhythmic thud of rubber soles on the linoleum floor. Doppelgangers often spawn directly inside the store, bypassing the entrance entirely.
If a customer appears at your register but you never heard the automatic doors chime, they are a fake. Furthermore, listen to their idle breathing. Humans have a looping, audible breathing track. Doppelgangers are dead silent until they speak, creating an unnatural vacuum of noise over the hum of the store's refrigerators.
Inventory Management and Corporate Strikes
You are still a retail employee, and the game enforces this through the cash drawer mechanic. The register interface requires basic math. If a total is $14.50 and the customer hands you a $20 bill, you must manually click the $5 bill and the 50-cent coin.
Giving incorrect change to a real human earns you a corporate strike. Accumulating three strikes results in immediate termination, which ends your run just as permanently as a doppelganger attack. Do not let the stress of identifying monsters cause you to fail basic math. Take your time, verify the entity, and count the change twice.
Frequently Asked Questions
What happens if I shoot a real customer? Shooting a real human triggers an immediate game over and deletes your current shift progress. The police arrive, you are arrested, and you must restart from 12:00 AM.
How do I survive the Smiler? Do not speak to it. Decline the transaction, look down at the floor, and wait for it to leave. If you make eye contact for more than three seconds, it will vault the counter and kill you.
Can doppelgangers enter the backroom? Yes. If you leave the backroom door unlocked, doppelgangers who were turned away at the register will attempt to flank you through the warehouse. Lock the door at 2:00 AM to prevent this.
Why does my register screen say MEAT? This is a barcode reader anomaly. It means the item you just scanned was manifested by a doppelganger and is not real store inventory. Decline the service immediately.