Corpse sickness triggers, per pzwiki, once more than 5 dead bodies are piled together and you can see or hear flies on them — and the way to avoid it is a hard distance rule, not a vague “clean up eventually”: stay at least 10 tiles away if the pile is outdoors, stay outside the infested building (or it stays outside yours), or put a floor between you and it if the pile is indoors. That is a threshold, not a slope — a base 9 tiles from a six-body pile is exposed, and one 11 tiles away is not. The tool below is this site’s own model for ranking which pile to clear first once you’re inside that threshold; the two rules above are pzwiki’s, not ours.
Corpse sickness is unusual among Project Zomboid’s ways to die in that everyone knows it exists and almost nobody knows where their own base sits. The threads are full of people comparing body counts, which is the wrong axis on its own: placement decides whether the count even matters. Twelve bodies in the room you sleep in is a worse position than sixty in a field two streets away, and no amount of counting will surface that.
Project Zomboid corpse sickness risk, at a glance
| Situation | Result | What to do about it |
|---|---|---|
| Five bodies dumped in the yard (at pzwiki's "more than 5" line) | Not triggered (pzwiki's own rule) | Exactly 5 does not clear pzwiki's "more than 5" trigger — not a confirmed case yet. |
| Pile is inside a house you cleared, but you live in the one next door | Not triggered (pzwiki's own rule) | Avoided — pzwiki's "outside of an infested building (or vice versa)" clause covers this even with 20 bodies. |
| A dozen bodies piled at the door, less than 10 tiles from you | High priority (this site's ranking, not a game value) (priority index 20) | Gate met — drag the doorway pile to one distant dump site before it grows. |
| Two weeks of kills never cleared, same floor you sleep on | Severe priority (this site's ranking, not a game value) (priority index 60) | Gate met and this site's model ranks it worst — clear the interior first. |
This checks pzwiki's own trigger first: more than 5 bodies in a pile, not avoided by 10+ tiles outdoors, a building boundary between you and the pile, or a different floor if the pile is indoors. The priority index and tier only apply once that trigger is met, and they are this site's ranking model, not a game value. Use the tracker below for your own base.
Weigh your own base
Corpse load tracker and clearance plan
High priority (this site's ranking, not a game value)
Priority index 40 (this site's model) · Clearable in a day or two of deliberate work, and much cheaper now than later.
- 1Confirm it with the flies, not just the countpzwiki's own trigger includes seeing or hearing flies on the pile, which this calculator cannot check for you. If you can hear buzzing near it, the condition is active; if not, treat this as a near-miss rather than a confirmed case.
- 2Move the pile off the thresholdThe doorway pile is the one people never clear, because every fight ends there. It also sits on the tile you cross most often. Drag it thirty tiles before you do anything cleverer.
- 3Drag to a single dump site, not to severalSplitting the pile into three medium piles around the perimeter keeps all three inside your daily routine. One distant dump is worth more than three tidy ones.
- 4Set a standing rule for where kills happenThe reason bases end up buried is that fighting happens at the door by default. Pick a killing ground one street away and fight there, and the disposal problem mostly stops recurring.
- 5Re-check after every large fight, not on a calendarLoad rebuilds in bursts, not steadily. A single bad night at the fence can undo two weeks of tidy housekeeping, so the trigger for a sweep should be the fight, not the date.
This checks pzwiki's own corpse-sickness rule first: more than 5 bodies in one pile, not avoided by 10+ tiles outdoors, a building boundary between you and the pile, or a different floor if the pile is indoors. Only piles that pass all of that get a priority ranking, and that ranking is this site's model, not a game value.
The tracker checks pzwiki’s own trigger first, and it asks the same two questions pzwiki’s rule actually turns on: where the pile is (inside a building or outdoors), and where you are relative to it. More than 5 bodies triggers it, unless you’re 10+ tiles away outdoors, on the far side of a building boundary from the pile either way (“outside of an infested building, or vice versa”), or on a different floor from an indoor pile. A pile that doesn’t clear that bar gets told so directly, instead of a priority number that implies it’s a confirmed case. Only piles that do clear it get a priority index, and that index is a separate question — this site’s ranking of clearance order, not a game threshold — so you can compare your own piles against each other and against the plan below. The clearance steps change with the disposal method you actually have, because the right plan with a shovel is a different plan from the right plan with nothing.
The weighting, published
| Where the bodies are | Weight in the index | Reasoning |
|---|---|---|
| Inside the building you sleep in | ×3 | Unbroken hours of exposure while asleep, every night |
| Piled at the door or gate | ×2 | The tile you cross most often, and the one nobody clears |
| In the yard, out of the way | ×1 | Passed occasionally, not slept beside |
| Well away from the base | ×0.15 | Distance does almost all the work here |
These are estimates, not extracted game values, and they answer a different question from the gate above: the gate asks whether corpse sickness applies at all; this table only ranks which pile to clear first once it does. The game’s own rule is a threshold, not a gradient — more than 5 bodies to trigger it, then avoided by 10+ tiles outdoors, a building boundary between you and the pile, or a different floor indoors — so don’t read “faraway” or “indoors” in this table as standing in for those three conditions; the tracker above asks about them directly.
Why the doorway pile is the one that gets you
Every fight ends at the door. That is not a habit you can decide your way out of, because the door is where the funnel is and the funnel is why you built it. So the pile regenerates after every bad night, sits on the highest-traffic tile you own, and never looks like a decision you made.
The fix is not tidier housekeeping. It is moving the fight:
- Pick a killing ground one street away, with a fence or a car to funnel through, and go to it rather than letting the horde come to you.
- Clear that ground on a schedule tied to fights, not dates. Load rebuilds in bursts.
- Keep the approach to your own door boring enough that nothing dies on it.
Choosing a disposal method
| Method | Cost | Best for | The mistake |
|---|---|---|---|
| Dragging | Time only, no tools | Small piles, early game | Splitting one pile into three medium ones inside your daily route |
| Burial | A shovel, plus digging time | Permanent removal near a settled base | Putting the plot between your door and your car |
| Fire | A fire source and nerve | Large piles on paved or dirt ground | Everything wooden you own is also flammable |
Note the last row’s real hazard: fire is the fastest option and the only one that can lose you the base outright. Use it on ground with a gap on every side, and stay to watch it.
Build 41 and Build 42
Corpse proximity has been a hazard across both builds and the housekeeping above applies to either. Build 42 raises the stakes rather than changing the rule, because you now spend far more time stationary at the base — crafting, firing pottery, tending animals — and stationary time next to a pile is exactly the exposure the mechanic charges you for. A Build 41 base you mostly slept in tolerated a messier yard than a Build 42 workshop does.
Reading it as a symptom
If you arrived here because something is making your character ill and you are not sure what, corpse proximity is one of five candidates that produce indistinguishable moodles, and it is the only one whose test requires you to physically leave for a day. Rule out the four cheap ones first.
Sources
- Corpse — PZwiki — read in full 22 September 2026. Confirms corpses can be burned with 100ml of gasoline or on a campfire, or buried, and that decomposing bodies do not themselves attract more zombies. Page stamped 42.16.0; current stable is 42.20.4.
- Sick — PZwiki — read in full 22 September 2026. States corpse sickness triggers “when more than 5 dead bodies are piled up together and flies are seen and heard buzzing,” and that avoiding it requires 10 tiles of distance outdoors, staying outside an infested building (or vice versa), or a different floor if the source is indoors. Also the source for the Queasy (25%) → Nauseous (50%) → Sick (75%) → Fever (90%) sickness-meter thresholds. Page stamped 42.12.3; current stable is 42.20.4.
- Steam news, Project Zomboid news hub — checked 22 September 2026. Confirms “42.20.4 STABLE & 42.19.2 UNSTABLE & 41.78.21 LEGACY Hotfixes Released,” dated 26 August 2026, as the most recent stable release.
