HumanitZ is a top-down zombie survival game about scavenging, base-building, and staying alive with friends. Co-op is the heart of it - but the world you build together is tied to the host, so when they’re offline, nobody survives another day.

This guide covers how HumanitZ co-op works, whether you need a dedicated server, where your save lives, and how to share it so anyone can host.

Does HumanitZ Need a Dedicated Server?

You have two ways to play together:

  • Host-based (P2P) co-op - the default. One player hosts a “clan” world for up to 4 players (the developer later added an option to raise this to 10). The world lives on the host’s machine, and if the host disconnects, everyone gets kicked.
  • Dedicated servers - HumanitZ supports dedicated servers (set up via SteamCMD/FTP) that run 24/7 and hold far more survivors (commonly up to around 40, configurable). They keep the world available to everyone, but require setup, maintenance, and usually a hosting fee.

For a group of friends who just want the world available whenever someone’s free - without running a server around the clock - there’s a simpler path: share the save file so whoever’s on can host locally. That’s what this guide covers.

Where Is the HumanitZ Save File Located?

On Windows, HumanitZ stores single-player and host saves in your user folder. Paste this into File Explorer:

%LOCALAPPDATA%\HumanitZ\Saved\SaveGames

Each world is made of two files: SAVENAME.sav and SAVENAME_Foliage.sav. You need both when moving a save between machines - copy them as a pair. (On a dedicated server the equivalent saves live under the server’s TSSGame/Saved/SaveGames folder instead.)

How Do You Save in HumanitZ?

HumanitZ autosaves your world as you play, so there’s no need to rely on a manual save every few minutes. To be safe with your latest progress, quit through the menu rather than force-closing. Because a world is two files that must stay together, manual copying is easy to get wrong - which is one reason automatic syncing helps.

Saving is the easy part. Getting both save files to whoever hosts next is where SaveSync comes in.

How SaveSync Keeps Your Clan Alive

SaveSync synchronizes your HumanitZ save - both files - across every player in the group. When a session ends, the latest world is distributed automatically. Anyone can then load it and host the next run, with no dedicated server and no waiting on one person.

How to Set Up SaveSync for HumanitZ

  1. Install SaveSync from Steam. Every player needs it.
  2. Create a sync group and invite your clan.
  3. Locate the save folder (%LOCALAPPDATA%\HumanitZ\Saved\SaveGames, as above) and point SaveSync at it so both .sav files sync together.
  4. Play normally. Scavenge, build, survive.
  5. SaveSync syncs the save automatically when the session ends.
  6. Anyone can host next time. Load the synced world and keep going.

One-time setup, automatic after that.

Why Use SaveSync Instead of a Dedicated Server

  • No 24/7 server or hosting bill. A dedicated HumanitZ server needs a machine online constantly. SaveSync is a one-time purchase with nothing to keep running.
  • Both save files, always in sync. HumanitZ worlds are two files that must match. SaveSync moves them as a set so nobody ends up with a mismatched or half-copied world.
  • Everyone on the latest world. Load an old save and recent base upgrades and loot are lost. SaveSync keeps the whole clan current.
  • Right-sized for friends. Dedicated servers are built for big persistent populations. For a handful of survivors, sharing the save is simpler and cheaper.

Survive Together, Whenever You’re Online

HumanitZ is brutal enough without your world being locked behind one person’s schedule. With SaveSync, the clan’s world is always reachable - load it, host it, and keep surviving.