Urgent Operation: Organ Doctor

Quickstart

1. Craft a Surgical Scalpel with .
2. Craft an Organ Repair Bench with — this is your surgery lab hub.
3. Find a mob or villager, aim at it, and use the Scalpel to open its surgical cavity (a persistent 27-slot organ inventory). Sneak-use the Scalpel on yourself to operate on your own body.
4. Harvest organs directly from the cavity, or replace damaged/rotten organs with healthy grafts.
5. Take harvested organs back to the Organ Repair Bench to purify rotten organs into human or animal-grade tissue, brew treatment vials, and prepare grafts.
6. Craft Rib Cage Armor from Animal Ribs for cheap, macabre protection.
7. Read the research books (craftable at any crafting table) to learn the full mechanics of hemorrhage, stasis, and grafting.

Overview

Urgent Operation: Organ Doctor turns mobs and villagers into surgical patients. Every creature has organs — hearts, lungs, ribs, muscles, spleens, kidneys, spines, livers, intestines, stomachs, and more exotic parts from special mobs — that can be opened up, harvested, and replaced. Organs come in three conditions: fresh (healthy and usable as grafts), damaged (unstable), and rotten (a source of infection). You use a Scalpel to operate, treatment vials to manage disease and time, and an Organ Repair Bench to turn raw harvested anatomy into usable medical supplies.

What It Adds

• Surgical Scalpel — the core tool for opening patients and performing operations.
• Organ Repair Bench — a crafting station for stabilizing, freezing, curing, and repairing organs.
• Organs from humans, animals, and unique mobs (creepers, endermen-adjacent Ender Pearl organs, cats, blazes, and more), each in fresh/damaged/rotten variants.
• Treatment items: Stasis Vials, Advanced and Permanent Stasis Vials, Stasis Cure Vial, Infection Vial, Immunosuppressant Vial.
• Weapons and tools: Hemorrhage Blade, Augmentation Kit.
• Armor: Rib Cage Helmet, Chestplate, Leggings, and Boots.
• Special grafts: Golden Heart, Ender Pearl Organ.
• Byproducts: Meat Blocks and Meat Bricks made from surplus rotten hearts.
• Research Books: lore-filled guides explaining surgery, hemorrhage, stasis, grafting, and rib cage engineering.

How To Use

Opening a patient: Aim the Scalpel at a living mob or villager and use it to open their surgical cavity — a persistent 27-slot inventory tied to that individual. Sneak-use the Scalpel while not aiming at anything to operate on yourself instead. This cavity is not a temporary chest; it's directly tied to the patient, so your triage work survives even if you leave and come back.

Harvesting and grafting: Inside the cavity you can pull organs out (harvesting) or insert replacement organs (grafting). Healthy grafts work best when the organ type matches the patient's native class — human-like, animal, or creeper. Damaged and rotten organs are not viable replacements; they need to be purified first.

Purifying organs: Rotten organs of the same type combine at a crafting table into their fresh human or animal equivalent, for example , , , , , , , and for the Appendix.

Treating hemorrhage: Infection Vials and the Hemorrhage Blade spread Slow Hemorrhage to mobs and villagers (players are immune). Infected patients decay faster and need critical organs — heart, lungs, spine — replaced with matching healthy grafts to cure them, or you can risk a creeper heart graft for a dangerous shortcut.

Freezing time with stasis: Stasis Vials pause active hemorrhage temporarily. Permanent Stasis Vials freeze a patient entirely, halting organ decay until reversed with a Stasis Cure Vial. Frozen mobs can be leashed, moved, tied off, and still reopened with a Scalpel while suspended — useful for slow, careful surgery.

Armor and combat: Wear Rib Cage armor for repairable, ribs-based protection. Use the Hemorrhage Blade to inflict Slow Hemorrhage directly in combat. The Augmentation Kit assists advanced grafting procedures.

Crafting And Obtaining

Tools And Stations

• Surgical Scalpel:
• Organ Repair Bench:
• Augmentation Kit:
• Hemorrhage Blade:

Vials And Treatments

• Stasis Vial:
• Advanced Stasis Vial:
• Permanent Stasis Vial:
• Stasis Cure Vial:
• Infection Vial:
• Immunosuppressant Vial:

Organ Purification (Rotten → Fresh)

• Human Heart:
• Human Lungs:
• Human Ribs:
• Human Muscle:
• Human Spleen:
• Human Kidney:
• Human Spine:
• Human Liver:
• Human Intestines:
• Human Stomach:
• Appendix:

Special Grafts

• Golden Heart:
• Ender Pearl Organ:

Armor (Rib Cage Set)

• Rib Cage Helmet: ... (see below)
• Rib Cage Helmet:
• Rib Cage Chestplate:
• Rib Cage Leggings:
• Rib Cage Boots:

Byproducts

• Meat Block:
• Meat Bricks:

Research Books

• The Scalpel and the Cavity:
• Red Tide in the Veins:
• The Glass Coffin Protocols:
• Workshop of Living Parts:
• A Field Guide to Grafts:
• Rib Cage Engineering Manual:

Abilities And Mechanics

• Organ Condition: Fresh organs are viable grafts. Damaged organs are unstable and shouldn't be relied on. Rotten organs actively worsen a patient's condition and are the root of infection.
• Patient Classes: Every creature belongs to a class — human-like, animal, or creeper — and grafts perform best when matched to that class.
• Slow Hemorrhage: Spread via Infection Vials or the Hemorrhage Blade. Only affects mobs and villagers, never players. Causes accelerated organ decay until cured.
• Curing Disease: Replace critical organs (heart, lungs, spine) with healthy matching grafts, or gamble with a creeper heart graft. Even after curing, leftover rotten organs elsewhere in the body can keep a patient distressed, so full recovery means clearing every rotten organ.
• Stasis: Temporary Stasis Vials pause hemorrhage briefly for safer operating windows. Permanent Stasis freezes a patient completely — decay and disease progression halt — until reversed with a Stasis Cure Vial. Frozen patients can be leashed and transported.
• Self-Surgery: Sneak-use the Scalpel with nothing targeted to operate on yourself, opening your own persistent organ cavity.

Progression And Strategy

Start by crafting a Scalpel and Organ Repair Bench, then experiment on common mobs to learn how organ harvesting and grafting works. Stockpile rotten organs and purify them into fresh human or animal tissue at a crafting table before attempting serious grafting. Build up a supply of Stasis Vials before tackling infected patients, since pausing hemorrhage buys time to replace critical organs safely. Read the research books early — they explain the disease, stasis, and grafting systems in detail and will save you from wasting harvested anatomy. Once you have a steady organ supply, branch into Rib Cage armor for protection and the Hemorrhage Blade or Augmentation Kit for more advanced surgical and combat options. Rare grafts like the Golden Heart and Ender Pearl Organ are best treated as end-goal rewards once you have a reliable organ-harvesting loop established.