Project Zomboid VOIP: What It Is and the Four Settings That Control It
VOIP is proximity voice chat built into Project Zomboid itself. Press your voice key and players near your character hear you through the game, at a volume that falls off with distance. No mod, no Discord, no third-party client. It is the reason roleplay servers work at all: you hear the stranger in the next room before you see them.
The server controls it with exactly four settings, grouped in the server settings screen under a tab the game labels Voice. That is the whole surface. If a guide hands you a longer list, check it before you paste it, because most of those names are not real.
Read from the shipped build. Every setting and every quoted description below was taken on September 17, 2026 from the Project Zomboid dedicated server on the default branch, Steam buildid 24909836. The wording is the game's own.
The four settings
| Setting | The game's own description | What to do with it |
|---|---|---|
VoiceEnable | "VOIP is enabled when checked" | The master switch. If nobody can hear anybody, start here rather than in audio drivers. |
VoiceMinDistance | "The minimum tile distance over which VOIP sounds can be heard." | The range inside which voice is at full strength. Raise it and conversation carries across a room instead of only face to face. |
VoiceMaxDistance | "The maximum tile distance over which VOIP sounds can be heard." | The hard cutoff. This is the number that decides whether shouting across a street works. It is also the lever for the classic RP complaint that you can hear a conversation you should not be able to hear. |
Voice3D | "Toggle directional audio for VOIP" | Directional audio, so voice comes from where the speaker is. Turning it off makes voice positionless, which is easier to follow and much less immersive. |
The distances are in tiles, which is the game's own unit, so you can pace them out in a world rather than guessing. Change one at a time. The two distances interact, and moving both at once leaves you unable to say which one produced the result.
Why so many guides list settings that do not exist
This page previously listed SpatialVoice, VerticalVoiceCutoff, VoiceMultiThreading, VoiceComplexity and VoiceSampleRate as things to configure. Checked against the shipped build, none of them is a server setting. Three appear nowhere in the game at all. The other two survive only inside a handful of non-English translation files, with no matching option anywhere in the code, which is the same pattern that keeps the long-dead ZombieUpdateRadius alive in advice about zombies vanishing on servers.
A description can outlive the setting it described, and a plausible name repeated often enough starts to look like documentation. The test is cheap: if the name does not appear in the settings your own server generates, it does nothing, no matter how many guides list it.
Anti-cheat: ten toggles, and they all run backwards
RP servers with open registration attract the people RP servers attract, so the anti-cheat settings come up constantly. Project Zomboid ships ten of them, and there is one thing to understand before you touch any:
Every one of these is a disable switch. The game's own description for each begins with the word "Disables". AntiCheatSpeed is described as "Disables character speed anti-cheat protection." Switching it on turns the protection off. Read them as exemptions, not as features to enable.
| Setting | What enabling it disables |
|---|---|
AntiCheatSpeed | Character speed protection |
AntiCheatNoClip | Character no-clipping protection |
AntiCheatHit | Character hit protection |
AntiCheatPlayer | Player protection |
AntiCheatXP | Player XP protection |
AntiCheatSafety | Safety system protection |
AntiCheatSafeHouse | Safehouse protection |
AntiCheatPermission | Player permissions protection |
AntiCheatChecksum | Checksum protection |
AntiCheatPacketException | Packet exception checks |
The practical advice is to leave all ten alone. You turn one off when a legitimate mod trips it and players cannot play, and you turn it back on when that mod goes. An admin who flips several while troubleshooting, and never restores them, has quietly opened the server rather than hardened it.
Running VOIP on a roleplay server
- Decide the eavesdropping distance first.
VoiceMaxDistanceis the single setting that shapes how your server feels. Short, and every conversation is private and the world feels empty. Long, and nothing said in public is ever secret. RP servers live or die on where that line sits, so set it deliberately and tell your players what it is. - Keep
Voice3Don. Directional audio is most of the reason in-game voice beats a voice app. Without it you have a worse Discord. - Do not expect VOIP to replace out-of-character coordination. Proximity voice is deliberately limited by distance. Staff coordination still happens somewhere else, and that is fine.
- Watch player count, not audio settings, when it lags. The developers put the warning in the
MaxPlayersdescription themselves: counts above 32 "will potentially result in poor map streaming and desync". If a busy session is rough, that is the more likely cause than anything in the Voice tab. - Control joining with the settings that actually do it.
Openset to false means administrators create accounts by hand, covered in the whitelist guide. That is the real gate for a private RP server.
Common questions
Do I need a mod for voice chat in Project Zomboid?
No. It is in the base game and the server enables it with VoiceEnable.
Why can I not hear anyone?
Check the server has VOIP enabled before you touch your microphone settings, then check how far away you actually are. Proximity voice does exactly what the name says, and the cutoff is whatever the server set.
Can people hear me through walls?
The two distance settings are what the server exposes, so the range is a distance rather than a line of sight. If people on your server hear things you would rather they did not, shorten VoiceMaxDistance.
Does VOIP work with Discord?
They are separate systems and neither knows about the other. Plenty of communities run both, one for in-character proximity voice and one for everything else.
How many players can an RP server hold?
Whatever you set, but the game's own warning about counts above 32 is the honest answer, and it is a warning about map streaming and desync rather than about voice.
More on the surrounding settings: all server settings, the multiplayer settings worth tuning, and the admin panel. The official Project Zomboid site is the reference for which build is current, which matters here because the settings list changes between builds.
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