Two models to keep straight
Wikily Body parts / Corpses and autopsy: skulls live on each organ. Removing an organ subtracts whatever White/Red that specimen carried. Soft parts: Blood 1 Red, Fat 1 Red, Flesh 1 White. Vitals come in six quality versions with different mixes (e.g. gold Skin 1R/3W, bronze Brain 1W, etc.).
Calculator: fixed planner deltas for common cuts and hard-organ outcomes, plus an optional Surgeon’s Error.
Useful for sandboxing; always confirm on the corpse UI. Embalming in rules.json 0.2.0 follows graveyardkeeper2.io.
Bone, Skin, Skull and hard-organ outcomes are still estimates where they disagree with the organ-carried model.
Soft parts (well supported)
| Part | Wikily carries | Planner Δ White | Planner Δ Red | Kit? | Notes |
|---|---|---|---|---|---|
| Blood | 1 Red | 0 | −1 | No | Free Red cleanup for burial. Keep on zombie keepers if you need Red. |
| Fat | 1 Red | 0 | −1 | No | Same as Blood. |
| Flesh | 1 White | −1 | 0 | Yes* | Burns burial White. Prima groups Flesh with free soft extracts — confirm kit cost in your build. |
*games.gg treats Flesh as kit-cost and White-damaging; Prima groups Flesh with free Blood/Fat. Flagged; planner keeps kit=true.
On a grave those red pockets cancel wreaths. On a worker they are perk slots. Do white skulls affect zombies? The sources on that page say no.
Six vitals (organ-carried skulls)
Skin, Bones, Skull, Heart, Brain, Guts — the only six organs on graveyardkeeper2.io. All six are required for resurrection (GameRant / Wikily Zombies). The bottle GK2 resurrection spends, one per corpse, is Reanimation Liquid (Clay + Alcohol + Salt). It does not add skulls to these organs. The Salt named in that recipe is ordinary Salt. GK2 Third Eye Salt does not go in Clay + Alcohol + Salt. A separate “Dark Organ” (+1 White / −2 Red) is not in that list, so it was removed from the calculator.
Anatomy requirement by quality
From graveyardkeeper2.io — Corpses & Organs, checked 2026-10-14. At or above the requirement every operation is perfect. Below it you usually lose the organ: a fair result destroys it, and a bad result puts a Surgeon’s Error in the slot (−1 White, −1 Red, slot unusable, body cannot be raised).
| Organ | Quality 1 | Quality 2 | Quality 3 |
|---|---|---|---|
| Skin | 1 | 3 | 6 |
| Bones | 2 | 4 | 7 |
| Skull | 3 | 5 | 8 |
That page does not publish Heart, Brain or Guts requirements. Wikily’s fuller table (bronze / silver / gold, with tick counts) is on the autopsy guide. Which technology has to be researched before that organ’s skulls even show is the tech tree. Almost every organ on a first-tier corpse is quality 1, so the early floors are Anatomy 1 for skin, 2 for bones and 3 for skulls.
Planner discrepancies still in rules.json:
- Bone / Skin fixed deltas come from early-guide narrative (−1 White for Bone, Skin converts White to Red). Wikily instead removes whatever that organ carried. Launch estimate — pending in-game test
- Skull +1 Red is an unconfirmed classic GK1 pattern. Launch estimate — pending in-game test A White-only skull extract would lower White, not add Red.
| Organ / action | Δ White | Δ Red | Kit? | Notes |
|---|---|---|---|---|
| Bone (planner) | −1 | 0 | Yes | games.gg narrative estimate. Prefer reading Bones’ icons on the corpse. |
| Skin (planner) | −1 | +1 | Yes | games.gg “White→Red” estimate. Wikily Skin variants vary widely. |
| Skull (cranium) (planner) | 0 | +1 | Yes | Launch estimate — pending in-game test +1 Red follows the classic Graveyard Keeper pattern. Wikily’s Skull page treats removal as taking the skulls that organ carried. |
Hard organs (Brain / Heart / Guts)
games.gg: extracting one randomly destroys two skull values (2R, 2W, or 1R+1W). Wikily: success is tick-based; a clean extract removes the organ’s skulls and leaves the item; failing short of silver leaves a Surgeon’s Error. Our calculator still offers the games.gg-style outcomes for planning:
| Outcome id | Label | Δ White | Δ Red |
|---|---|---|---|
rr |
−2 Red | 0 | −2 |
ww |
−2 White | −2 | 0 |
rw |
−1 Red −1 White | −1 | −1 |
Unlock Surgeon / Expert anatomist (Wikily perk tree) before gambling keepers. On the calculator, enable a hard organ, then pick the outcome you observed.
Practical tips
- Burial: Blood → Fat; keep White-heavy vitals; see burial prep. What those red skulls cancel on a grave, one wreath each, is red skulls.
- Zombie: keep all six vitals; don’t scrub Red soft parts; implant Red organs — zombie prep.
- Farm craft materials from non-burial corpses so keepers stay clean.
- Embalming is a separate pass — embalming (Solution / Injection grades).
- Compare arrival bands on corpse types.
Cut or leave
Fixed planner deltas are estimates where an organ’s own icons disagree. Use this as the decision, then type the skulls you see.
| Part | Burial | Zombie | If you are short on Anatomy |
|---|---|---|---|
| Blood, Fat | Remove. 1 Red each, and the pick does not fail. | Usually leave. On early bodies that Red is the perk slots. | Still safe. Pockets are not an Anatomy check. |
| Flesh | Leave. Removing it drops 1 White. | White is unused. Take it only if you need the item. | Kit cost is still disputed (games.gg vs Prima). The skull change is not. |
| Skin, Bones, Skull | Remove only a Red-heavy specimen you can extract cleanly. | Keep the set. All six organs are required to raise the body. | Do not start. Quality 1/2/3 floors are Skin 1/3/6, Bones 2/4/7, Skull 3/5/8. |
| Heart, Brain, Guts | Same rule: read icons, then the Wikily floor. | Do not remove one you cannot put back perfectly. | graveyardkeeper2.io does not publish these three floors. Use the Wikily table and treat it as a second source. |
| Skull +1 Red toggle | Do not plan a grave around it. | Do not plan perk slots around it. | Launch estimate — pending in-game test Classic pattern. The calculator checkbox uses the same label. |
A failed organ operation is not “almost the organ.” It is a Surgeon’s Error: −1 White, −1 Red, slot ruined, zombie path closed. Open that case before you gamble a keeper. Hard-organ rows in the calculator (random −2) are the early-guide outcome set. Wikily removes whatever that organ carried. If you already cut, pick the outcome you saw. If you have not cut, do not treat −2 Red as a promise.
Common mistakes
- Using the planner delta instead of the icons on a gold skull that is clearly White. Removal subtracts those skulls.
- Calling a dark-looking organ a separate Dark Organ item. The corpse page lists six organs. The calculator no longer has that toggle.
- Harvesting Brain because Autopsy, Master just unlocked while Anatomy is still under the Wikily gold floor of 13. The tech lets you see the organ. The mastery decides if you keep it.
Related guides
Guides that are not this organ table, including first days, are grouped in the library.
FAQ
Which organs are free?
Blood and Fat in our rules (and games.gg). Prima also groups Flesh as free — confirm kit cost in-game.
What Anatomy do I need before I cut?
graveyardkeeper2.io, by quality 1 / 2 / 3: Skin 1 / 3 / 6, Bones 2 / 4 / 7, Skull 3 / 5 / 8. Operating below the requirement usually loses the organ. Heart, Brain and Guts floors are not on that table; see the autopsy guide’s Wikily list.
Why is Skin “bad” for burial in the calculator?
games.gg narrative converts White→Red. Wikily: only if that Skin specimen actually carries Red / White you don’t want to lose. Read the icons.
Can I edit these numbers?
Yes — edit data/rules.json and redeploy. The calculator rebuilds from that file.
Where do I toggle organs interactively?
Use the Extractions and Hard organ outcomes panels on the calculator.
Anatomy table checked 2026-10-14 against graveyardkeeper2.io — Corpses & Organs. Bone, Skin, Skull (+1 Red, unconfirmed) and hard-organ outcomes remain planner estimates where they differ from organ-carried skulls. Dark Organ was removed from the calculator: that page lists only six organs.