Recommended sandbox settings for Project Zomboid

This page suggests sandbox settings for five kinds of Build 42 game: a gentle first game, a classic challenge, a long-term building game, a hard survival game and a sprinter run. Each table gives a value and the reason for it, and the first table shows the Build 42 defaults for comparison. Written for Build 42 (42.22), November 2026.

A town at night in Project Zomboid — Five sandbox setups compared against the Build 42 Apocalypse defaults.

01Part

Build 42 defaults to compare against

Every table below lists our suggested values next to the reason for each. These are Opinion picks, not official presets. The baseline is the Build 42 Apocalypse preset, which is what the game loads for a normal new world. Full explanations of each option are on the sandbox settings page, and the built-in presets are compared on game modes.

Setting	Build 42 Apocalypse default
Zombie count	Normal (population multiplier 0.65, peak 1.5 on day 28)
Speed	Random, with 0% sprinters
Transmission	Blood and Saliva, death in 2-3 days
Loot	Most categories 0.6, ranged weapons 1.2, perishable food 0.8
Loot respawn	Off (0 hours)
Zombie respawn	None (0 hours, multiplier 0)
Water / power shutoff	0-30 days / 14-30 days
XP multiplier	1 (global)
Nutrition	On
Multi-hit	Off
Muscle strain factor	0.7

Build 41 guides often quote a Fast Shamblers default and 72-hour zombie respawn. Build 42 Apocalypse uses Random speed and turns zombie respawn off, so older advice about "lowering respawn" may already match the default.

02Part

A gentle first game

Opinion The goal is to learn the systems without losing a character to one bad fight in the first hour. Read the beginner's guide alongside this setup.

Setting	Value	Why
Zombie count	Low	Room to make mistakes while you learn doors, windows and noise.
Speed	Shamblers	Every zombie is slow, so you can always walk away.
Transmission	Saliva only	Scratches and lacerations stop being death sentences; bites still kill.
Loot	Common (about 2x)	Enough tools and food to try every skill.
Loot respawn	Off	Not needed when loot is already plentiful.
Shutoff	14 days-2 months	More time with taps and lights while you set up.
XP multiplier	1.5 to 2	Faster feedback on how skills work.
Nutrition	On	Teaches eating habits you will need later.
Multi-hit	On	Makes crowds of two or three manageable.
Muscle strain	0.5	Fewer surprise injuries from long fights.

03Part

A classic challenge

Opinion For a second or third run, stay close to the defaults and change only what makes the game feel fair. This is roughly the experience the developers tune around.

Setting	Value	Why
Zombie count	Normal	The intended pressure in towns.
Speed	Random, 0% sprinters	The Build 42 default mix; faster walkers punish sloppy movement.
Transmission	Blood and Saliva	The classic rule: any wound can be fatal.
Loot	Default (Apocalypse values)	Scarce enough to make looting decisions matter.
Loot respawn	Off	Keeps the world draining over time.
Shutoff	Default	You should plan for water and power loss in the first month.
XP multiplier	1	Default pace.
Nutrition	On	Weight matters for long runs.
Multi-hit	Off	Forces you to fight one target at a time.
Muscle strain	0.7 (default)	Keep it unless strain stops being fun.

04Part

A long-term building game

Opinion Builders want months of play without the map running dry. The main changes are slower utility loss, some loot and zombie respawn, and faster XP for the slow crafting skills. See base building and generators for the projects this supports.

Setting	Value	Why
Zombie count	Low or Normal	Enough threat to need walls, not so much that every supply run is a siege.
Speed	Shamblers or Random	Your choice; building is the focus.
Transmission	Blood and Saliva	Keeps outings tense.
Loot	Normal (1.0) for materials and tools	Nails, planks and tools run out fast otherwise.
Loot respawn	On, slow cycle (for example every 30 to 60 days)	Long games need some refill; see loot respawn.
Zombie respawn	Low, slow cycle	A trickle stops the map from feeling empty; see zombie respawn.
Shutoff	Longest window you are comfortable with	Gives time to build rain collectors and fuel stock.
XP multiplier	1.5 to 3	Carpentry, metalwork and masonry are slow at 1x.
Nutrition	On	Farming and cooking have more point with it on.
Multi-hit	Optional	Personal taste.
Muscle strain	0.5	Long building sessions and hauling cause a lot of strain.

Note that "Construction Prevents Loot Respawn" is on by default, so containers inside your base will not refill.

05Part

A hard survival game

Opinion For experienced players who want a real threat. This sits between Apocalypse and the Extinction preset. Read combat before you start.

Setting	Value	Why
Zombie count	High	Towns become no-go areas without a plan.
Speed	Random with 5 to 10% sprinters	Extinction uses 6% sprinters; a few fast ones keep you alert.
Transmission	Blood and Saliva	No safety net.
Loot	Rare (around 0.4 to 0.6), ammo lower	Extinction drops most categories to 0.4 to 0.6 and ammo to 0.2.
Loot respawn	Off	Scarcity is the point.
Zombie respawn	On, 72 hours, 0.1	The Extinction values; cleared areas slowly refill.
Shutoff	Instant or 0-30 days	Forces early water and light planning.
XP multiplier	1	Default pace.
Nutrition	On	Starvation becomes a real pressure.
Multi-hit	Off	One target at a time.
Muscle strain	1.0	The Extinction value; reckless fighting has a cost.

06Part

A sprinter run

Opinion All-sprinter games are short and violent. Fewer zombies and more loot keep the run playable. The sprinters page covers tactics, and CDDA is a harder alternative.

Setting	Value	Why
Zombie count	Low	Sprinters at Normal count overwhelm most players.
Speed	Sprinters	The whole point of the run.
Transmission	Blood and Saliva, or Saliva only for a first try	Saliva only lets you survive the scratches you will take.
Loot	Normal (1.0)	You will loot less, so each trip should pay.
Loot respawn	Off	Runs rarely last long enough to need it.
Shutoff	Default	Not the main threat here.
XP multiplier	1 to 2	Faster combat skills help early.
Nutrition	On	Default.
Multi-hit	On	Packs of sprinters arrive together.
Muscle strain	0.5	Fights are constant, so strain builds fast.

Sneaking matters more than fighting. Keep fitness and strength in mind, since fitness affects endurance during chases.

07Part

Quick answers

What are the best sandbox settings for a first game?

In our opinion, Low population, Shamblers, Saliva-only transmission, common loot and XP around 1.5 to 2 give new players room to learn. Raise them once the basics feel easy.

Does Build 42 have zombie respawn on by default?

No. The Build 42 Apocalypse preset sets Respawn Hours, Unseen Hours and the respawn multiplier to 0. Extinction and Rising use a 72-hour cycle with a 0.1 multiplier.

What is the default zombie speed in Build 42?

Apocalypse uses Random speed with 0% sprinters. Build 41 guides often say Fast Shamblers, which no longer matches the Build 42 preset.

What does Muscle Strain Factor do?

It multiplies the muscle strain you get from swinging weapons and carrying heavy loads. The Apocalypse default is 0.7 and the setting runs from 0 to 10.

Should I turn on loot respawn?

It is off by default. For a long building game a slow cycle helps, but containers in areas you have built in will not refill while Construction Prevents Loot Respawn is on.

How is Outbreak different from Apocalypse?

Both use Normal population and Random speed, but Outbreak turns multi-hit on, lowers muscle strain to 0.6, boosts several skill XP rates and gives a longer water and power window.

Default values come from Pindrop and PZFans preset tables written for Build 42.19, which agree with each other; later 42.22 patches may have adjusted them. All recommended values are the site's opinion. Sources: Pindrop sandbox settings (B42) · PZFans playstyles compared (42.19) · PZFans difficulty presets · PZFans respawn explained. Your game is the final word: if it disagrees with us, tell us and we will fix the page.