❤ Survival & Health
Project Zomboid's health system is granular and realistic: each part of the body has its own health status. An untreated wound can become infected, a fracture immobilizes, and a hemorrhage is fatal if ignored.
Bite = Almost Certain Death. A zombie bite infects with the Knox Virus in practically 100% of cases. The infection has no known cure and is fatal within 1–3 game days. This is the PZ's main threat.
Body Parts and Injuries
| Body Part | Possible Injuries | Impact |
|---|---|---|
| Head | Bruise, cut, lacerations | Headache, possible unconsciousness |
| Neck | Scratch, Bite, Lacerations | Maximum risk of Knox infection; severe bleeding |
| Torso | Contusion, Cut, Puncture (bullet) | Possible internal bleeding, pain that affects performance |
| Arm | Scratch, Bite, Fracture, Cut | Fracture → immobilization of the arm; affects combat and items |
| Hand | Cut, Scratch | Penalty for manual actions (crafting, combat) |
| Leg | Bite, Scratch, Fracture, Sprain | Fracture → severely limp; twist → limping |
| Foot | Cutting, Twisting | Reduced mobility |
Types of Injury and Chance of Knox Infection
| Wound | Cause | Knox Infection | Immediate Treatment |
|---|---|---|---|
| Scratch | Contact with zombies | 7% | Disinfectant + Bandage |
| Laceration | More intense contact with zombies | 25% | Disinfectant + Bandage (urgent) |
| Bite | Zombie bite | ~100% | There is no treatment for the virus |
| Cut | Broken glass, fall, tool | 0% | Disinfectant + Bandage or Suture |
| Deep Wound | Knife, shrapnel, large glass | 0% | Suture (needle + thread) + Preventive antibiotics |
| Fracture | Fall from height, collision | 0% | Splint (splint) + rest (days) |
| Sprain | Slight fall, sudden movement | 0% | Splint + rest (hours) |
| Burn | Fire, explosion | 0% | Special bandage, do not expose to the sun |
| Bullet Wound | Shooting (PvP or accidental) | 0% | Tweezers → remove bullet → Suture → Antibiotics |
First Aid Protocol
- Stop and Assess: Open the health menu (H key by default) and identify all active injuries.
- Disinfect: Apply Alcoholic Wipes, Rubbing Alcohol or any alcohol to the wound. This prevents bacterial infection.
- Bandage: Cover with Bandage, Ripped Sheets or Cotton Balls. Uncovered wounds bleed and become infected more quickly.
- Suture (if necessary): Deep wounds require a needle + suture thread (Needle + Thread) or Suture Needles to close.
- Monitor: Change dirty bandages (red icon in health interface). Dirty dressings increase the risk of bacterial infection.
- Rest: Wounds heal faster by sleeping. The healing rate is significantly higher during sleep.
Knox Virus — The Main Threat
The Knox Virus is the cause of the apocalypse in Project Zomboid. When your character becomes infected, death is practically inevitable.
Progression of Knox Infection
Phase 1 (0–6h)
Incubation: No visible symptoms. You may not know you are infected. The character is completely normal.
Phase 2 (6–24h)
First Symptoms: Mild fever, increased tiredness, occasional nausea. It can still be confused with the flu or food poisoning.
Phase 3 (24–48h)
Advanced Symptoms: High fever, tremors, generalized pain. The character becomes significantly slower and weaker. Severe stamina drop.
Phase 4 (48–72h)
Terminal Phase: The character periodically loses consciousness. Imminent death. No cure possible.
Fever ≠ Always Knox: Fever can be caused by a bacterial infection (treatable with antibiotics) or by the Knox Virus (untreatable). Watch for progression — bacterial infection improves with antibiotics. If the fever gets worse even with antibiotics, it's likely Knox.
What to do if you get a bite
- Accept the situation — most bites are fatal in Apocalypse mode.
- Organize your camp: Leave your base organized for the next character, if playing with inheritance.
- Distribute important items in known locations to facilitate future looting.
- Take advantage of the last few days to clean areas close to your base (the work is not wasted).
- Consider adjusting the Sandbox settings to reduce
ZombieTransmissionif the bites seem unfair.
Sandbox Configuration: In
ZombieTransmission, you can reduce the chance of transmission through bites and scratches. Useful for those who find the mechanics too punishing at first.Medical Items — Complete Reference
Dressings and Bandages
| Item | Use | Efficiency | Where to Find |
|---|---|---|---|
| Bandage | Cover minor to medium wounds | High | Pharmacies, first aid kits |
| Ripped Sheets | Bandage Substitute (craftable) | Medium | Tear any clothing |
| Alcohol Bandage | Pre-disinfected bandage | Very High | Pharmacies (rare) or create with alcohol + bandage |
| Cotton Balls | Very small wounds, apply medicine | Low | Pharmacies, bathrooms |
| Denim Strips | Resistant bandage replacement | Medium-High | Tear jeans |
| Leather Strips | Durable bandage replacement | High | Tearing leather clothing |
Disinfectants
| Item | Disinfection Efficiency | Where to Find |
|---|---|---|
| Rubbing Alcohol | Excellent | Pharmacies, bathrooms |
| Alcoholic Wipes | Excellent | Medical kits, pharmacies |
| Disinfectant | Very High | Pharmacies, supermarkets |
| Vodka / Whiskey | Good | Markets, bars, houses |
| Wine | Acceptable | Supermarkets, houses |
| Beer | Weak | Anywhere |
Medicines
| Medication | Effect | When to Use | Care |
|---|---|---|---|
| Antibiotics | Treats bacterial infection. Reduces fever. | Fever with infected wound (red). After bullet or deep wound. | Does not treat Knox Virus. Take for several days in a row. |
| Painkillers | Reduces pain. Removes performance penalty for pain. | Fractures, serious injuries causing slowness. | It doesn't cure — it just masks the pain. Do not overdo the dosage. |
| Beta Blockers | Reduces stress and panic drastically. | Before intense combat, in high-stress situations. | Addiction with frequent use. Use sparingly. |
| Sleeping Tablets | Induces deep sleep quickly. | When tired but in a safe place and needing to sleep. | It can make you sleep longer than planned. Never use in an unsafe location. |
| Vitamins | Improves general health, boosts immunity. | Prevention. Take regularly with good nutrition. | Light effect — does not replace active treatment. |
| Anti-depressants | Reduces unhappiness permanently while active. | Characters with high unhappiness penalties. | Withdrawal effect when stopping — temporary worsening of mood. |
| Water Purification Tablets | Purifies dirty/contaminated water. | Whenever you need to drink water from unreliable sources. | Recipe: 1 tablet + container with water = purified water. |
Medical Equipment
| Item | Use | Required Skill |
|---|---|---|
| Suture Needle | Suturing deep wounds (more accurate) | First Aid 4+ |
| Needle + Thread | Improvised suture | First Aid 2+ |
| Tweezers | Remove bullet projectiles | First Aid 3+ |
| Splint | Immobilize fractures and sprains | First Aid 1+ (craftable) |
| Stethoscope | More accurate diagnosis of other players | First Aid 3+ |
| Thermometer | Measures body temperature accurately | Any level |
Craftable Medical Recipes
Craftable recipes for essential medical items:
Alcohol BandageAny level
Ingredients
- 1× Bandage or Ripped Sheets
- Rubbing Alcohol / Vodka / Whiskey (0.1 unit)
→ 1× Alcohol Bandage (or Alcohol Ripped Sheets)
Action: ApplyAlcohol | Time: 40s
Splint (Tala)First Aid 1
Ingredients
- 1× Ripped Sheets / Denim Strips / Leather Strips
- 1× Plank or Tree Branch or Wooden Stick
→ 1× Splint
Action: Making | Time: 70s
Plantain Poultice (Poultice)First Aid 5 or Doctor 5
Ingredients
- 1× Mortar and Pestle
- 5× Plantain (foraged)
→ 1× Plantain Poultice (accelerates healing)
Action: MixingMortarPestle | Needs to be learned
Comfrey PoulticeFirst Aid 5 or Doctor 5
Ingredients
- 1× Mortar and Pestle
- 5× Comfrey (foraged)
→ 1× Comfrey Cataplasm (accelerates fracture healing)
Especially effective in bone fractures
Wild Garlic PoulticeFirst Aid 5 or Doctor 5
Ingredients
- 1× Mortar and Pestle
- 5× Wild Garlic (foraged)
→ 1× Wild Garlic Poultice (natural anti-inflammatory)
Reduces inflammation and accelerates overall healing
Purify WaterAny level
Ingredients
- 1× container with water
- 1× Water Purification Tablet
→ Purified water (safe to drink)
Alternative: Boil water long enough
Diseases & Conditions
Disease Reference
| Disease / Condition | Cause | Symptoms | Treatment |
|---|---|---|---|
| Bacterial Infection | Untreated wound, dressing dirty for a long time | Fever, wound pain, redness | Antibiotics + Dressing change + Disinfection |
| Knox Virus | Zombie Bite (100%), Laceration (25%), Scratch (7%) | Progressive fever, weakness, tremors — no improvement | No cure. Only symptomatic with Painkillers/Vitamins. |
| Flu / Cold | Exposure to cold and rain without suitable clothing | Sneezing, coughing, mild fever, fatigue | Rest + Vitamins + Staying warm. Passes in 1–3 days. |
| Food Poisoning | Spoiled food, raw when it should be cooked, poisonous mushrooms | Nausea, vomiting, diarrhea, severe weakness | Rest + Hydration + time. Severe cases: hospitalize. |
| Dehydration | Don't drink water for a long time | Extreme thirst, weakness, foggy thinking | Drink water immediately. Severe cases are lethal. |
| Hypothermia | Very low body temperature (cold + wet) | Tremors, extreme slowness, drowsiness | Immediate heating: fire, dry clothes, sleeping covered. |
| Hyperthermia | Very high temperature (heat + heavy clothing) | Excessive sweating, dizziness, weakness | Remove clothing, shade, cold water, AC or ventilation. |
| CO₂ Poisoning | Generator in closed space | Progressive drowsiness → unconsciousness → death | Prevention: always generate the generator outdoors. No cure after unconsciousness. |
| Sprain / Torsion | Fall, sudden movement, running on uneven surfaces | Limping, pain when walking | Splint + rest. Improvement in hours to 1 day. |
| Bone Fracture | Fall from height (BoneFracture=true), car collision | Severely limping, unable to use limb | Mandatory split + rest for several days. Comfrey Cataplasm accelerates. |
Distinguishing Knox Virus from Flu: Both cause fever. The difference: flu improves with rest and vitamins in 1–2 days. Knox virus progressively worsens and does not respond to antibiotics. If you have recently been bitten or lacerated and have a fever, assume Knox.
Nutrition & Food
With Nutrition activated (standard in Apocalypse), your character needs to balance four macronutrients. Imbalance causes strength and endurance penalties.
The Four Macronutrients
| Nutrient | Function | Deficiency | Excess |
|---|---|---|---|
| Calories | General energy, controls hunger bar | Weakness, weight loss, low stamina | Weight gain if much above needs |
| Proteins | Muscular strength, injury recovery, muscle building | Loss of strength, slower healing, reduced stamina | Excess rarely problematic |
| Carbohydrates | Quick energy, fuel for intense physical activity | Rapid fatigue during physical exertion | Weight gain, possible increase in triglycerides |
| Lipids | Long-lasting energy, overall health | General weakness, reduced immunity | Excessive weight gain with too much excess |
Nutritional Sources by Macro
🥩 High in Proteins
Meat (any type), fish, eggs, canned beans. Essential for maintaining strength and healing injuries quickly.
🌾 High in Carbohydrates
Bread, pasta, rice, potatoes, corn, oats. Fuel for intense physical activity and running.
🧈 High in Lipids
Cheese, butter, nuts, olive oil, bacon. Long-lasting energy — important for days of constant activity.
⚡ High Calorie
Chocolate, peanut butter, processed food, cheese. To regain weight after illness or lean periods.
Nutrition States and Their Effects
| State | Description | Effect on Character |
|---|---|---|
| Starving | Extreme hunger — empty hunger bar | Severe weakness, zero stamina, impossible to run |
| Hungry | Hunger — bar below 50% | Slight performance reduction |
| Full | Satiated — bar at ideal level | Normal performance |
| Overfed | Overfed — bar too high | Slight sluggishness, stomach discomfort |
| Underweight | Below healthy weight | Reduced strength and stamina, more fragile |
| Overweight | Over healthy weight | Slower running, reduced stamina |
| Obese | Very overweight | Severely reduced stamina, compromised mobility |
Eating Strategy: For the first few days, eat whatever you can find. From week 2, start planning — balance meals with protein (meat), carbohydrates (bread/rice) and lipids (cheese/butter). The Nutritionist trait shows the exact values of each food.
Stress & Panic
Stress (unhappiness) and Panic are two separate systems that affect the character's performance in different ways.
Stress (Unhappiness)
| What increases Stress | What reduces Stress |
|---|---|
|
|
Panic
Panic is different from Stress — it is an acute response to threatening situations. Causes gun sight tremors and combat penalties.
| What causes panic | How to reduce it |
|---|---|
|
|
Sleep & Tiredness
Tiredness (fatigue) increases with physical activity and time spent awake. Very tired characters become slower, less accurate and make more noise.
Effects of Fatigue by Level
| Tiredness Level | Effects |
|---|---|
| Rested | Maximum performance. No penalty. |
| Slightly Tired | Slight reduction in stamina. Imperceptible in practice. |
| Tired | Reduced stamina, slower movement, slower reactions. |
| Very Tired | Very low stamina, slow movements, unstable aiming. |
| Exhausted | Almost impossible to fight or run. Extreme danger. |
| Sleeping Standing Up | Character may faint. Critical situation — go to sleep immediately. |
Sleep Management Tips
- Safe Place Always sleep in a closed and safe place. Barricade windows and doors before bed.
- Schedule Sleeping during the day in a safe place is just as effective as at night. Consider sleeping during the day in places you've explored and scavenged.
- Sleeping Tablets They induce rapid sleep, but can make you sleep longer than planned. Use only in very safe locations.
- Night Owl Trait Needs less sleep — excellent for maximizing productive time.
- Sleepyhead Trait Needs more sleep — requires comfortable beds and safe places more often.
Temperature & Climate
The temperature system directly affects the character's health and performance.
Factors that Affect Body Temperature
| Factor | Effect on Temperature |
|---|---|
| Ambient temperature (seasons) | Summer = hot; Winter = cold |
| Rain | Quickly cools — wet + cold = hypothermia |
| Clothes | Heavy clothes heat up in winter, overheat in summer |
| Physical activity | Running and fighting warms up the body |
| Fireplace / Fireplace | Heats significantly |
| Indoors | Protects from wind and rain, more stable temperature |
| Heated vehicle | Heats up quickly |
Clothes Guide by Season
❄ Winter / Cold
Wear multiple layers: t-shirt + sweater + coat. Boots and gloves are important. Stay dry — wet clothes lose warmth.
☀ Summer / Heat
Light clothes (t-shirt, light pants). Avoid heavy coats — they cause hyperthermia during physical activity. Seek shade and water.
🌧 Rain
Waterproof clothing (trench coat, raincoat) reduces cooling when wet. Important in winter to prevent hypothermia.
🍂 Autumn / Spring
Variable temperature. Carry an extra layer in your backpack. Be flexible as the temperature changes throughout the day.
Hygiene
Dirt and blood on a character affects unhappiness and can influence how zombies perceive him by smell.
Sources of Dirt
- Blood Accumulates from killing zombies or being injured. High blood levels increase stress and can attract zombies by smell.
- Dirt Accumulates over time, especially when working outside.
- Dirty Clothes Clothes accumulate dirt regardless of the character.
How to Clean
- Bath Use a bathroom with a shower (while the water lasts) or a bathtub. Removes blood and dirt from the character.
- Improvised Washing Bucket of water + Soap allows you to clean yourself anywhere.
- Washing Clothes Washing machine (with electricity) or hand wash with water + soap.
- Rain Standing in the rain slowly reduces dirt (but cools the character).
Combat & Zombies
Project Zomboid's zombies are individually simulated with their own alertness, vision and hearing. Understanding how they work is essential to survive.
How Zombies Detect You
| Sense | Base Range | Amplifying Factors | How to Reduce |
|---|---|---|---|
| 👁 Vision | Medium-Long | Sunlight, flashlights, fire light, vehicle lights | Stay crouched, move slowly, no lights, Cat's Eyes (trait) |
| 👂 Hearing | Very High | Gunshots, engines, radios, alarms, running, screams | Walking (not running), silent shoes, Graceful (trait) |
| 👃 Smell | Low | Excessive blood on the character, corpses nearby | Keep clean, use soap |
Combat Strategies
🤫 Escape & Stealth
Squat (C) to reduce noise and visibility. Lure zombies with sounds away from areas you want to clean — throw a bottle or turn on a radio in a different room.
⚔ 1v1 Combat
Use the push attack (Right Button) to create distance before striking. Never fight large groups in melee. One zombie at a time is the golden rule.
🔫 Firearms
Extremely effective but very noisy. A single shot can attract dozens of zombies from the entire neighborhood. Use only with a planned and known escape route.
🔥 Fire
Extremely effective for hordes but extremely dangerous — fire spreads to buildings (FireSpread=true). Use only in open spaces away from your base.
🚗 Vehicle
Running over zombies is effective but damages the vehicle. Use only in emergency situations or against isolated groups on roads. Speed + right direction = powerful weapon.
🏠 Construction Cleaning
Clean buildings room by room, close doors after each room. Never open a door without checking that there is room to retreat. Traps at the entrance help control flow.
Hand-to-Hand Combat Mechanics
- Push Right click while weapon equipped. Push the zombie to create distance. Essential to avoid bites.
- Kill Move The final kill animation. Occurs automatically when zombie is downed and you get close. It consists of stepping on the head or stabbing.
- Swipe Some weapons have a swing area that hits multiple zombies. Bats, shovels and axes have a wide arc.
- Knockdown Chance to knock down the zombie when hitting. Knockdown is very useful — zombies on the ground can't bite and you can apply kill moves.
- Beware of Stamina Fighting consumes stamina. With low stamina, attacks are very slow and you are vulnerable. Never enter combat with low stamina.
Stealth
Well-executed stealth allows you to move through densely infested areas without having to kill every zombie. The Sneaking ability reduces the noise of footsteps; the ability Nimble allows you to move faster in combat stance.
Factors Affecting Stealth
| Factor | Impact | Control |
|---|---|---|
| Crouch (C) | Reduces visibility and noise significantly | Always use when infiltrating |
| Shoe Type | Leather = noisy; Sneakers = quiet | Wear soft shoes for exploration |
| Floor Surface | Carpet = silent; Wood = medium; Concrete = loud | Plan route avoiding noisy surfaces |
| Speed | Running = very noisy; Floor = medium; Crouching = silent | Reduce speed in critical areas |
| Skill Sneaking | Reduces the noise of footsteps in all contexts | Train by walking crouched near zombies |
| Graceful Trait | Reduces noise from footsteps in general | Take at the beginning of the character |
| Inconspicuous Trait | Reduces chance of being spotted | Take at character start |
Decoy Technique: Carry a portable radio on. When you want to distract zombies from an area, leave the radio on in a strategic location and they will investigate the noise, clearing your path.