Updated July 2026
Night At The Infirmary Anomaly Checklist
What the Anomaly Checklist Does
The anomaly checklist is an interactive wiki tool for Night At The Infirmary on Roblox. It translates the game's three-layer verification system — live window view, printed photo comparison, and CCTV camera feeds — into a tick-box workflow you can run beside an active shift. Instead of memorizing every tell from all anomaly types before you play, the checklist prompts you through each layer in the correct order and records what you have already checked for the current patient.
The tool exists because beta players consistently fail shifts by skipping layers, not by missing obscure tells. A patient who looks normal at the window may fail the photo print; another may only reveal wrong proportions on camera. The checklist enforces the OR rule A.D. Games built into UPD 1: one confirmed red flag in any layer means reject with the shutter button. Admit only when window, photo, and CCTV all clear.
This page explains how to use the checklist during live play. For the broader tools collection, see the tools hub. For written theory behind each layer, read how to detect anomalies first.
Three Inspection Layers Explained
Every patient in Night At The Infirmary passes through three independent evidence sources before you make an admit-or-reject call. The checklist mirrors that structure with three expandable sections.
Layer 1 — Window: Stand at the reception glass and observe the live patient. Tick boxes for visual tells — wrong eye spacing, unnatural stillness, height mismatches, skin texture issues, and clothing inconsistencies. Full symptom lists live on visual tells. Do not leave window focus until you have scanned face, posture, and silhouette against the porch light.
Layer 2 — Photo: Move to the photo printer tray and compare the printed still against your window memory. Tick photo-specific mismatches such as teeth shape, ear outline, glare-hidden skin, or proportions that changed between layers. Reference photo tells when you need examples. Photo-only anomalies are common in beta reports — never skip this step to save queue time.
Layer 3 — CCTV: Interact with the monitor bank and cycle feeds covering the entrance, hallway, and waiting alcove. Tick camera-only tells — delayed motion, figures where no patient should stand, feed glitches, or proportions visible only on security video. See camera tells for feed-specific red flags. CCTV also drains Sanity on certain imposters; scan efficiently and look away after clearing or flagging the layer.
How to Use the Checklist During a Shift
Open the checklist before your shift starts — on a second monitor, a phone beside your keyboard, or a snapped browser window on single-screen setups. When the entry chime plays and a patient approaches the window, begin a new inspection cycle.
- Reset if any ticks remain from the previous patient. Each arrival gets a clean checklist state.
- Window section — work through ticks while focused at the glass. Note anything suspicious even if you are not sure yet.
- Photo section — pick up the print, compare, and tick mismatches. Return to window memory if the face feels different.
- CCTV section — cycle each relevant channel before ticking clears or flags.
- Decision — if any layer has a confirmed tell ticked, reject. If all three sections are clear, allow entry. Shutter timing is covered in how to reject patients.
- Reset again before the next patient arrives.
Treat uncertain ticks as investigation prompts, not automatic rejects. Re-check the photo and CCTV before shuttering a human patient. When in doubt after a full re-scan, rejection is still the safer error — admitting a Skinwalker ends the shift.
Reset and Progress Tracking
The Reset button clears every tick box and collapses section state back to a fresh patient template. Use reset immediately after you make a decision — admit or reject — so residual checks never bleed into the next arrival. Also reset if you stepped away mid-inspection or if a teammate accidentally clicked boxes while passing the mouse.
Progress tracking is per patient, not per night. The checklist does not save overnight statistics or leaderboard scores — it is a live-shift aid, not a career tracker. That design keeps attention on the current visitor rather than cumulative completion percentages that might tempt you to rush.
During long shifts with back-to-back patients, the reset rhythm becomes as important as the ticks themselves: decision → reset → window → photo → CCTV → decision → reset. Players who internalize that loop report fewer accidental admits on night three queues. Pair reset discipline with the all nights walkthrough when pacing accelerates.
If you need a static reference without interactivity, bookmark the three tell pages instead. The checklist adds structure; the anomaly wiki pages add depth.
Using the Checklist Alongside the Game
The checklist is built for parallel play, not pre-reading. Keep Roblox focused on your primary display and the tool visible without obscuring the shutter button or interact prompts. Recommended setups by platform:
- Dual monitor PC: Game fullscreen on monitor one; checklist always visible on monitor two. Fastest setup for squad callouts.
- Single monitor PC: Alt-tab after each layer or use Windows snap with Roblox windowed. Accept slightly slower pacing on early nights.
- Phone or tablet: Prop the device beside your keyboard. Tap ticks with your non-mouse hand while the game holds focus.
- Mobile Roblox: Split attention between the game app and mobile browser checklist. Fine photo tells are harder on mobile — prioritize window and CCTV ticks carefully.
Headphones help more than screen layout. Audio cues often precede visual tells, and the checklist does not replace listening for knocks, distorted dialogue, or shutter mechanism sounds documented on controls and items pages.
Squad play: assign one player as checklist operator who reads ticks aloud while the window player executes shutter calls. One voice must own the final decision to avoid contradictory admits under pressure. Solo players run all layers themselves — the checklist simply prevents skipped steps when jumpscares or low Sanity break concentration.
When to Graduate Off the Checklist
The goal is habit, not permanent dependency. Most players retire the checklist after nights one through three once the window → photo → CCTV order feels automatic and they can recall common tells without reading every box label. Keep it available for new anomaly types after update patches or when returning from a break.
Re-open the tool when you change platforms — PC veterans switching to mobile often need the structure again because fine photo detail is harder on small screens. Also use it during event nights when modified lighting or queue rules introduce unfamiliar pressure.
Combine checklist sessions with the first night walkthrough for guided learning, then shift to anomaly reference pages only when your reject accuracy stabilizes. If you still admit imposters after removing the checklist, return for one more night and identify which layer you skip under stress — that layer deserves extra ticks until it sticks.
Related Guides
Interactive Anomaly Checklist
Complete each step for every patient before admitting. Reset when the next arrival appears.
Frequently Asked Questions
What are the three layers in the anomaly checklist?
Window (live patient view), photo (printed still comparison), and CCTV (security camera feeds). Each layer has its own tick boxes. Clear all three before admitting.
When should I press Reset on the checklist?
Reset after every patient decision and before starting a new inspection. This prevents ticks from the previous visitor carrying over during busy queues.
Does the checklist auto-reject anomalies for me?
No. It is a reminder and tracking tool only. You still make the shutter decision in Roblox based on what you observe in-game.
Can I use the checklist on a phone while playing on PC?
Yes. A phone or tablet beside your keyboard is a popular setup. Tap boxes with one hand while the game stays focused on your main monitor.
Do I need the checklist if I read all anomaly pages?
Reading helps, but live shifts punish skipped steps more than missing obscure tells. The checklist enforces layer order during play even when you know the theory.
Is the checklist updated for UPD 1 beta?
Yes. Tick categories align with current UPD 1 tells on the visual, photo, and camera reference pages. Check update notes when patches add new anomaly types.