Project Zomboid B42.16 Unstable Update Guide (Historical) | Jobs, Extinction, Tailoring, Firearms

Historical patch notes · Steam 2026-03-30 / 2026-03-31

This page is a historical 42.16.0 Unstable changelog, not a live Build 42.19 survival guide. When 42.16 shipped it was a cleanup pass toward clearer jobs, clearer difficulty, and a more complete survival loop.

Use it to understand what changed from 42.15 to 42.16 (jobs, presets, tailoring, firearms, controllers). For current picks, open the Build 42.19 occupation, sandbox, and controller pages linked below.

Historical page — not current Unstable

Occupation costs and some sandbox fields moved again after 42.16 (for example Doctor / Nurse / Rancher cost 0 and Metalworker is −4 on Build 42.19). Tailoring patch XP and the listed firearm attachment rules still match Build 42.19, but controller and multiplayer bullets are changelog text only. Current guides: occupations · sandbox presets · controller guide · latest version.

42.16 occupation balance deep dive Live occupations (Build 42.19)

Patch notes window: 2026-03-30 / 2026-03-31

42.15 → 42.16 saves were incompatible

Bottom Line (for players who landed on 42.16)

When 42.16 released, a fresh Unstable save was worth it if you were stuck on overpriced jobs, confusing Extinction rules, patch-grind tailoring, or awkward controller play. That recommendation applied to the 42.16 era, not to today’s Build 42.19 branch — recheck live occupation costs and presets before starting a new run.

Section Status vs Build 42.19

What on this page still matches Build 42.19, and what is 42.16 history only.

Official Steam Patch Notes

Two Steam announcements: the March 30 preview of what 42.16 aimed to fix, and the March 31 full release list.

Four Official Presets in the 42.16 Era

Comparison is B42.15 earlier values → 42.16 Unstable only — how the four official presets split apart when 42.16 shipped. Several listed Extinction fields still match Build 42.19, but this table is not a live sandbox guide — use the current sandbox / playstyle pages for today’s defaults (including fields such as wound infection that are outside this table).

Extinction

Values from the 42.16 Unstable era

42.15 → 42.16 preset changes (historical)
Setting	B42.15 earlier values	42.16 values	What it felt like then

What Players Felt in 42.16

Player-facing summary of the patch notes. Each card shows whether the rule still matches Build 42.19 or is historical only.

Five Things Worth Remembering

42.16 was mainly a rebalance patch, not a new-toy patch.
The most important Extinction change then was not the 6% sprinter number. It was that daytime pressure mattered again.
Tailoring rewards making gear more than mindless patch loops — still true on Build 42.19.
Firearms and controllers both got system-level cleanup in the notes, not just one or two tiny fixes.
If a job felt overpriced in 42.15, 42.16 was the first time to recheck it — then recheck again on Build 42.19 before copying costs.

For the 42.16 occupation deep dive, open the historical occupation balance page. For live character creation, use the Build 42.19 occupations guide.

Related Site Guides

Historical 42.16 pages first, then live Build 42.19 guides for the same systems.

42.16 occupation balance (historical) 42.15 Extinction breakdown (historical) Occupations (Build 42.19) Sandbox presets (Build 42.19) Playstyle comparison (Build 42.19) Tailoring guide Weapon parts and scopes Controller guide (Build 42.19) Latest version explainer

Four Practical Tips from the 42.15 → 42.16 Jump

These tips describe how to treat the 42.16 patch when it shipped. They are not automatic advice for a brand-new Build 42.19 save.

1. Re-pick jobs from the 42.16 sheet

Do not import old 42.15 opinions into a 42.16 start. Doctor, Nurse, Metalworker, and Park Ranger all needed a fresh look then — and their Build 42.19 costs have moved again.

2. Stop treating daytime Extinction as free time

The 42.16 Extinction retune made daylight pressure real. Route looting and exits as if a sprinter can fully commit in daylight.

3. Stop grinding patch XP

If you want Tailoring levels, making gear is the better route. Mid- and late-run bags, armor, and leather pieces still carry much better XP than patch spam on 42.19.

4. Re-check old firearm attachments after that jump

The 42.16 notes warned that some older-save scopes may need detach and reattach. On a post-42.16 save that already works, this is only relevant if attachments look broken.