Which ports does a Project Zomboid server use?

UDP 16261 (DefaultPort) and UDP 16262 (UDPPort) by default. In our tests the server used no TCP port for players.

How many players can a server take?

MaxPlayers goes up to 254, not counting admins. The game's own file warns that more than 32 may cause poor map streaming and desync.

How do I add Workshop mods?

Put the Workshop item IDs in WorkshopItems and the mod IDs in Mods. The server downloads the Workshop items when it starts.

Why is my password ignored?

The game's own file says Password is ignored when you host through the Host button in the game. It applies to a dedicated server.

Free tool

Project Zomboid server config generator (servertest.ini)

PvP, passwords, mods, ports, safehouses and the rest of servertest.ini, with every default and range from the game's own file. Import yours to check it; settings outside its list are kept as they are. Zombies and loot are in the sandbox settings.

Checked against the game's own servertest.ini from a dedicated server install, Steam build 25485538 (Build 42) on 11 November 2026. Sources: PZwiki: server settings.

Reference

Every setting in servertest.ini

All 144 settings this tool knows, with the default each one starts at and the values it takes. Advanced settings are included; in the editor they sit behind the Advanced switch.

PVP

servertest.ini: PVP settings
Setting	Default	Values	What it does
`PVP`Player vs player	Default`on`	ValuesOn or off	What it doesLets players hurt and kill each other.
`PVPLogToolChat`Log PVP to admin chat · advanced	Default`on`	ValuesOn or off	What it doesPosts a note in the admin chat whenever players fight each other.
`PVPLogToolFile`Log PVP to a file · advanced	Default`on`	ValuesOn or off	What it doesWrites player-versus-player fights to the server's log file.
`SafetySystem`PVP safety switch	Default`on`	ValuesOn or off	What it doesLets players turn their own PVP on and off, so a fight needs at least one of them to be in PVP mode.
`ShowSafety`Show PVP skull · advanced	Default`on`	ValuesOn or off	What it doesShows a skull over the head of players who are in PVP mode.
`SafetyToggleTimer`PVP switch delay · advanced	Default`2`	Values0 to 1,000	What it doesHow long it takes a player to turn PVP mode on or off.
`SafetyCooldownTimer`PVP switch cooldown · advanced	Default`3`	Values0 to 1,000	What it doesHow long a player must wait before switching PVP mode again.
`SafetyDisconnectDelay`PVP disconnect delay · advanced	Default`60`	Values0 to 60	What it doesA delay, from 0 to 60, that the game uses for players who disconnect while the PVP safety system is on.
`PVPMeleeWhileHitReaction`Hit back during hit reaction · advanced	Default`off`	ValuesOn or off	What it doesLets a player hit again right after another player has struck them.
`PVPMeleeDamageModifier`PVP melee damage	Default`30`	Values0 to 500	What it doesScales how much damage melee attacks between players do.
`PVPFirearmDamageModifier`PVP firearm damage	Default`50`	Values0 to 500	What it doesScales how much damage ranged attacks between players do.
`PlayerBumpPlayer`Players bump each other · advanced	Default`off`	ValuesOn or off	What it doesLets players bump and knock over other players when running through them.

Time and sleep

servertest.ini: Time and sleep settings
Setting	Default	Values	What it does
`PauseEmpty`Pause when empty	Default`on`	ValuesOn or off	What it doesStops game time while nobody is online.
`SaveWorldEveryMinutes`Autosave interval · advanced	Default`0`	Values0 minutes or more	What it doesSaves the loaded part of the map every this many real-world minutes, because the game otherwise saves it mainly after players leave an area.
`SleepAllowed`Allow sleeping	Default`off`	ValuesOn or off	What it doesLets players sleep when their character is tired, but they don't have to.
`SleepNeeded`Sleep is needed	Default`off`	ValuesOn or off	What it doesMakes players' characters get tired so that they have to sleep.
`FastForwardMultiplier`Sleep speed-up · advanced	Default`40`	Values1 to 100	What it doesHow many times faster time passes while players sleep.

Chat and names

servertest.ini: Chat and names settings
Setting	Default	Values	What it does
`GlobalChat`Global chat	Default`on`	ValuesOn or off	What it doesTurns the chat channel that everyone can see on or off.
`ChatStreams`Chat channels · advanced	Default`s,r,a,w,y,sh,f,all`	ValuesA list, items separated by “,”	What it doesThe chat channels players can use, written as short codes separated by commas.
`ServerWelcomeMessage`Welcome message	Default`Welcome to Project Zomboid Multiplayer! <LINE> <LINE> To interact with the Chat panel: press Tab, T, or Enter. <LINE> <LINE> The Tab key will change the target stream of the message. <LINE> <LINE> Global Streams: /all <LINE> Local Streams: /say, /yell <LINE> Special Steams: /whisper, /safehouse, /faction. <LINE> <LINE> Press the Up arrow to cycle through your message history. Click the Gear icon to customize chat. <LINE> <LINE> Happy surviving!`	ValuesText	What it doesThe first message players see in chat after they log in, where <LINE> starts a new line.
`DisplayUserName`Show usernames	Default`on`	ValuesOn or off	What it doesShows each player's username above their head.
`ShowFirstAndLastName`Show character names	Default`off`	ValuesOn or off	What it doesShows each character's first and last name above their head.
`UsernameDisguises`Disguises hide usernames	Default`off`	ValuesOn or off	What it doesLets players hide their username by wearing a disguise such as a mask.
`HideDisguisedUserName`Hide disguised usernames	Default`off`	ValuesOn or off	What it doesHides the username of a player who is wearing a disguise.
`AnnounceDeath`Announce player deaths	Default`off`	ValuesOn or off	What it doesPosts a message in global chat every time a player dies.
`AnnounceAnimalDeath`Announce animal deaths	Default`off`	ValuesOn or off	What it doesPosts a message in global chat every time an animal dies.
`MouseOverToSeeDisplayName`Hover to see names · advanced	Default`on`	ValuesOn or off	What it doesMakes players point the mouse at someone to see their name.
`HidePlayersBehindYou`Hide players you can't see · advanced	Default`on`	ValuesOn or off	What it doesHides players you can't see, the same way zombies are hidden.
`MapRemotePlayerVisibility`Other players on the map	Default`1`	Values1 (Hidden), 2 (Friends), 3 (Friends and nearby players), 4 (Everyone)	What it doesWhich other players show on the in-game map.
`BadWordListFile`Bad-word list file · advanced	Default`(empty)`	ValuesText	What it doesThe path to a file of banned words, with one word on each line.
`GoodWordListFile`Allowed-word list file · advanced	Default`(empty)`	ValuesText	What it doesThe path to a file of words that stay allowed even if they contain a banned word, with one word on each line.
`BadWordPolicy`Bad-word punishment · advanced	Default`3`	Values1 (Ban), 2 (Kick), 3 (Record the violation in the database), 4 (Mute)	What it doesWhat happens to a player who writes a banned word in chat.
`BadWordReplacement`Bad-word replacement · advanced	Default`[HIDDEN]`	ValuesText	What it doesThe text that replaces a banned word in chat.
`DisableScoreboard`Turn off scoreboard · advanced	Default`off`	ValuesOn or off	What it doesTurns the player scoreboard off.
`HideAdminsInPlayerList`Hide admins in player list · advanced	Default`off`	ValuesOn or off	What it doesKeeps admins out of the player list.
`ShowCoordinates`Show coordinates	Default`off`	ValuesOn or off	What it doesShows a player's map coordinates in the lower right corner of the screen.
`ChatMessageCharacterLimit`Chat message length limit · advanced	Default`200`	Values64 to 1,024	What it doesThe most characters one chat message can have.
`ChatMessageSlowModeTime`Chat slow-mode delay · advanced	Default`3`	Values1 to 30	What it doesHow long a player must wait between chat messages in slow mode, with no unit given by the game.

Joining

servertest.ini: Joining settings
Setting	Default	Values	What it does
`Open`Open to new players	Default`on`	ValuesOn or off	What it doesLets anyone join and make an account, instead of needing an admin to create it first.
`SpawnPoint`Forced spawn point · advanced	Default`0,0,0`	ValuesText	What it doesMakes every new player start at these x,y,z map coordinates, and 0,0,0 turns it off.
`SpawnItems`Starting items	Default`(empty)`	ValuesA list, items separated by “,”	What it doesThe items every new player starts with, written as item IDs separated by commas.
`DenyLoginOnOverloadedServer`Refuse logins when overloaded · advanced	Default`on`	ValuesOn or off	What it doesStops new players from joining while the server is overloaded.
`MaxPlayers`Player slots	Default`32`	Values1 to 254 players; usually up to 32	What it doesHow many players can be online at once, not counting admins. The game's own file warns that more than 32 may cause problems.
`PingLimit`Ping limit · advanced	Default`0`	Values0 milliseconds or more	What it doesKicks a player whose connection delay goes above this many milliseconds, and 0 turns it off.
`DropOffWhiteListAfterDeath`Remove from whitelist on death	Default`off`	ValuesOn or off	What it doesTakes a player's account off the whitelist when their character dies, so they can't make a new one on a closed server.
`Password`Server password	Default`(empty)`	ValuesText	What it doesThe password players need to join; leave it empty to let anyone in.
`MaxAccountsPerUser`Accounts per Steam user · advanced	Default`0`	Values0 or more	What it doesLimits how many accounts one Steam user may create on this server.
`AllowCoop`Allow split-screen	Default`on`	ValuesOn or off	What it doesLets co-op and split-screen players join.
`SteamScoreboard`Steam names on scoreboard · advanced	Default`off`	ValuesOn or off	What it doesShows Steam usernames and avatars in the player list.
`SteamVAC`Steam VAC · advanced	Default`on`	ValuesOn or off	What it doesTurns on Valve's Anti-Cheat system.
`LoginQueueEnabled`Login queue · advanced	Default`off`	ValuesOn or off	What it doesMakes players wait in a queue when they log in.
`LoginQueueConnectTimeout`Login queue timeout · advanced	Default`60`	Values20 to 1,200	What it doesHow long the login queue waits for a player to connect, with no unit given by the game.
`AllowNonAsciiUsername`Allow non-English usernames	Default`off`	ValuesOn or off	What it doesLets usernames use characters outside plain English, such as Cyrillic letters.

Anti-cheat and network

servertest.ini: Anti-cheat and network settings
Setting	Default	Values	What it does
`SwitchZombiesOwnershipEachUpdate`Rotate zombie control · advanced	Default`off`	ValuesOn or off	What it doesA technical network option about which player's computer controls each zombie.
`SpeedLimit`Speed limit · advanced	Default`70`	Values10 to 150	What it doesA speed limit for player characters that the server's checks use, which the game doesn't explain further.
`AntiCheatSafety`Anti-cheat: PVP safety system · advanced	Default`2`	ValuesA whole number	What it doesSets how the server's anti-cheat check for PVP safety system reacts, and the game does not explain what each number means.
`AntiCheatSpeed`Anti-cheat: character speed · advanced	Default`2`	ValuesA whole number	What it doesSets how the server's anti-cheat check for character speed reacts, and the game does not explain what each number means.
`AntiCheatNoClip`Anti-cheat: no-clipping · advanced	Default`4`	ValuesA whole number	What it doesSets how the server's anti-cheat check for no-clipping reacts, and the game does not explain what each number means.
`AntiCheatHit`Anti-cheat: character hits · advanced	Default`2`	ValuesA whole number	What it doesSets how the server's anti-cheat check for character hits reacts, and the game does not explain what each number means.
`AntiCheatPacketException`Anti-cheat: packet errors · advanced	Default`4`	ValuesA whole number	What it doesSets how the server's anti-cheat check for packet errors reacts, and the game does not explain what each number means.
`AntiCheatPermission`Anti-cheat: player permissions · advanced	Default`2`	ValuesA whole number	What it doesSets how the server's anti-cheat check for player permissions reacts, and the game does not explain what each number means.
`AntiCheatXP`Anti-cheat: player XP · advanced	Default`2`	ValuesA whole number	What it doesSets how the server's anti-cheat check for player XP reacts, and the game does not explain what each number means.
`AntiCheatSafeHouse`Anti-cheat: safehouses · advanced	Default`2`	ValuesA whole number	What it doesSets how the server's anti-cheat check for safehouses reacts, and the game does not explain what each number means.
`AntiCheatPlayer`Anti-cheat: player data · advanced	Default`2`	ValuesA whole number	What it doesSets how the server's anti-cheat check for player data reacts, and the game does not explain what each number means.
`AntiCheatChecksum`Anti-cheat: checksums · advanced	Default`2`	ValuesA whole number	What it doesSets how the server's anti-cheat check for checksums reacts, and the game does not explain what each number means.
`MultiplayerStatisticsPeriod`Statistics update period · advanced	Default`1`	Values0 to 10 seconds	What it doesHow often the server updates its multiplayer statistics, and 0 turns them off.
`MaxPacketsPerSecond`Packet limit per player · advanced	Default`300`	Values100 to 1,000	What it doesThe most network packets the server will handle from each player.

Server listing

servertest.ini: Server listing settings
Setting	Default	Values	What it does
`DefaultPort`Game port · advanced	Default`16261`	Values0 to 65,535	What it doesThe main UDP port players connect to; the game's default is 16261.
`UDPPort`Direct connection port · advanced	Default`16262`	Values0 to 65,535	What it doesThe second UDP port, used for direct connections; the game's default is 16262.
`Public`Show in server browser	Default`off`	ValuesOn or off	What it doesLists the server in the game's own server browser.
`PublicName`Server name	Default`My Zomboid Server`	ValuesText	What it doesThe name shown in the server browser.
`PublicDescription`Server description	Default`(empty)`	ValuesText	What it doesThe text shown under the server's name in the server browser.
`UPnP`UPnP port opening · advanced	Default`on`	ValuesOn or off	What it doesAsks the router to open the ports by itself, and falls back to the default ports if that fails.
`server_browser_announced_ip`Announced IP address · advanced	Default`(empty)`	ValuesText	What it doesThe IP address the server announces to the browser, for machines that have several addresses.

World

servertest.ini: World settings
Setting	Default	Values	What it does
`ResetID`Reset ID · advanced	Default`9024237`	Values0 or more	What it doesA number that tells the game whether the world was soft-reset, and changing it makes every player create a new character.
`Mods`Mod IDs · advanced	Default`(empty)`	ValuesA list, items separated by “;”	What it doesThe IDs of the mods to load, separated by semicolons.
`Map`Maps · advanced	Default`Muldraugh, KY`	ValuesA list, items separated by “;”	What it doesThe map folders to load, in order, separated by semicolons.
`DoLuaChecksum`Check game files · advanced	Default`on`	ValuesOn or off	What it doesKicks players whose game files don't match the server's.
`ServerPlayerID`Server player ID · advanced	Default`1640906913`	ValuesA whole number	What it doesA number that tells the game whether a character came from another server, and changing it makes players create new characters.
`WorkshopItems`Workshop item IDs · advanced	Default`(empty)`	ValuesA list, items separated by “;”	What it doesThe Steam Workshop IDs of the mods for the server to download, separated by semicolons.
`Seed`World seed · advanced	Default`OyUxEvNhNatbcZLr`	ValuesText	What it doesThe code that decides how the world is generated, and changing it for an existing world also needs the map_worldgen.bin file deleted.

Safehouses and war

servertest.ini: Safehouses and war settings
Setting	Default	Values	What it does
`SafehousePreventsLootRespawn`Safehouses stop loot respawn	Default`on`	ValuesOn or off	What it doesStops loot from coming back inside buildings that players have claimed as a safehouse.
`PlayerSafehouse`Players can claim safehouses	Default`off`	ValuesOn or off	What it doesLets both players and admins claim safehouses.
`AdminSafehouse`Only admins can claim safehouses	Default`off`	ValuesOn or off	What it doesLets only admins claim safehouses.
`SafehouseAllowTrepass`Allow trespassing	Default`on`	ValuesOn or off	What it doesLets people who aren't members walk into a safehouse without being invited.
`SafehouseAllowFire`Fire can damage safehouses	Default`on`	ValuesOn or off	What it doesLets fire damage safehouses.
`SafehouseAllowLoot`Allow looting safehouses	Default`on`	ValuesOn or off	What it doesLets people who aren't members take items from a safehouse.
`SafehouseAllowRespawn`Respawn in safehouse	Default`off`	ValuesOn or off	What it doesMakes players respawn in a safehouse they belonged to before they died.
`SafehouseDaySurvivedToClaim`Days to survive before claiming	Default`0`	Values0 days or more	What it doesHow many in-game days a player must survive before they can claim a safehouse.
`SafeHouseRemovalTime`Safehouse removal time	Default`144`	Values0 hours or more	What it doesRemoves players from a safehouse they haven't visited for this many real-world hours.
`SafehouseAllowNonResidential`Allow non-residential safehouses	Default`off`	ValuesOn or off	What it doesLets players claim buildings that aren't homes.
`SafehouseDisableDisguises`Safehouses disable disguises · advanced	Default`on`	ValuesOn or off	What it doesStops a disguise from hiding who a player is where safehouses are concerned.
`MaxSafezoneSize`Maximum safe zone size · advanced	Default`20000`	Values0 or more	What it doesThe largest size allowed for a safe zone.
`AllowDestructionBySledgehammer`Sledgehammers can destroy	Default`on`	ValuesOn or off	What it doesLets players destroy world objects with sledgehammers.
`SledgehammerOnlyInSafehouse`Sledgehammer only in safehouse	Default`off`	ValuesOn or off	What it doesLets players destroy world objects with sledgehammers only inside their own safehouse.
`War`Safehouse wars	Default`off`	ValuesOn or off	What it doesTurns on safehouse wars, where one group can attack another group's safehouse.
`WarStartDelay`War start delay	Default`600`	Values60 seconds or more	What it doesHow long before a war starts.
`WarDuration`War duration	Default`3600`	Values60 seconds or more	What it doesHow long a war lasts.
`WarSafehouseHitPoints`War safehouse hit points	Default`3`	Values0 or more	What it doesHow many hit points a safehouse has during a war.
`DisableSafehouseWhenOwnerConnected`Safehouse is normal while owner is online · advanced	Default`off`	ValuesOn or off	What it doesMakes a safehouse act like an ordinary house while one of its owners is online.

Rules

servertest.ini: Rules settings
Setting	Default	Values	What it does
`NoFire`No fire	Default`off`	ValuesOn or off	What it doesTurns off every kind of fire except campfires.
`KnockedDownAllowed`Knocked-down state · advanced	Default`off`	ValuesOn or off	What it doesLets characters be knocked down, which is unfinished and can make player positions look wrong to others.
`SneakModeHideFromOtherPlayers`Sneaking hides from other players · advanced	Default`on`	ValuesOn or off	What it doesHides a sneaking player from other players' view.
`UltraSpeedDoesnotAffectToAnimals`Ultra speed skips animals · advanced	Default`off`	ValuesOn or off	What it doesKeeps animals at normal speed when time is sped up with ultra speed.
`PlayerRespawnWithSelf`Respawn where you died	Default`off`	ValuesOn or off	What it doesLets players respawn at the spot where they died.
`PlayerRespawnWithOther`Respawn at a split-screen partner	Default`off`	ValuesOn or off	What it doesLets players respawn next to a split-screen or Remote Play player.
`ItemNumbersLimitPerContainer`Container item limit	Default`0`	Values0 to 9,000	What it doesThe most items one container can hold, and 0 means no limit.
`BloodSplatLifespanDays`Blood splat lifetime · advanced	Default`0`	Values0 to 365 days	What it doesHow many days before old blood splats are removed, and 0 means they never go away.
`RemovePlayerCorpsesOnCorpseRemoval`Remove player corpses too · advanced	Default`off`	ValuesOn or off	What it doesAlso removes players' corpses when old dead bodies are cleaned up.
`TrashDeleteAll`Allow Delete All on bins · advanced	Default`off`	ValuesOn or off	What it doesLets players use the delete-all button on bins.
`CarEngineAttractionModifier`Car noise attraction · advanced	Default`0.5`	Values0 to 10	What it doesChanges how far zombies are drawn to car engines, where lower values can reduce lag.
`DisableVehicleTowing`No vehicle towing	Default`off`	ValuesOn or off	What it doesTurns off towing vehicles.
`DisableTrailerTowing`No trailer towing	Default`off`	ValuesOn or off	What it doesTurns off towing trailers.
`DisableBurntTowing`No burnt-wreck towing	Default`off`	ValuesOn or off	What it doesTurns off towing burnt-out vehicles.
`UsePhysicsHitReaction`Physics hit reactions · advanced	Default`off`	ValuesOn or off	What it doesMakes hits push characters around using physics.

Remote admin and Discord

servertest.ini: Remote admin and Discord settings
Setting	Default	Values	What it does
`RCONPort`RCON port · advanced	Default`27015`	Values0 to 65,535	What it doesThe port that remote console (RCON) connections use.
`RCONPassword`RCON password · advanced	Default`(empty)`	ValuesText	What it doesThe password for the remote console, which stays switched off while this is empty.
`DiscordEnable`Discord chat link · advanced	Default`off`	ValuesOn or off	What it doesConnects the server's global chat to a Discord channel.
`DiscordToken`Discord bot token · advanced	Default`(empty)`	ValuesText	What it doesThe access token of the Discord bot.
`DiscordChatChannel`Discord chat channel · advanced	Default`(empty)`	ValuesText	What it doesThe name of the Discord channel for chat.
`DiscordLogChannel`Discord log channel · advanced	Default`(empty)`	ValuesText	What it doesThe name of the Discord channel for logs.
`DiscordCommandChannel`Discord command channel · advanced	Default`(empty)`	ValuesText	What it doesThe name of the Discord channel for commands.
`WebhookAddress`Slack webhook URL · advanced	Default`(empty)`	ValuesText	What it doesThe Slack incoming-webhook web address that the server posts messages to.

Voice and radio

servertest.ini: Voice and radio settings
Setting	Default	Values	What it does
`VoiceEnable`Voice chat	Default`on`	ValuesOn or off	What it doesTurns in-game voice chat on.
`VoiceMinDistance`Voice minimum distance	Default`10`	Values0 to 100,000	What it doesThe shortest distance, in tiles, over which voice chat can be heard.
`VoiceMaxDistance`Voice maximum distance	Default`100`	Values0 to 100,000	What it doesThe farthest distance, in tiles, over which voice chat can be heard.
`Voice3D`Directional voice	Default`on`	ValuesOn or off	What it doesMakes voice chat directional, so you hear which way it comes from.
`DisableRadioStaff`Staff radio off · advanced	Default`off`	ValuesOn or off	What it doesTurns off radio transmissions from players who have a staff access level.
`DisableRadioAdmin`Admin radio off · advanced	Default`on`	ValuesOn or off	What it doesTurns off radio transmissions from players with the admin access level.
`DisableRadioGM`GM radio off · advanced	Default`on`	ValuesOn or off	What it doesTurns off radio transmissions from players with the GM access level.
`DisableRadioOverseer`Overseer radio off · advanced	Default`off`	ValuesOn or off	What it doesTurns off radio transmissions from players with the overseer access level.
`DisableRadioModerator`Moderator radio off · advanced	Default`off`	ValuesOn or off	What it doesTurns off radio transmissions from players with the moderator access level.
`DisableRadioInvisible`Invisible players' radio off · advanced	Default`on`	ValuesOn or off	What it doesTurns off radio transmissions from invisible players.

Factions

servertest.ini: Factions settings
Setting	Default	Values	What it does
`Faction`Factions	Default`on`	ValuesOn or off	What it doesLets players create factions.
`FactionDaySurvivedToCreate`Days to survive before founding a faction	Default`0`	Values0 days or more	What it doesHow many in-game days a player must survive before they can create a faction.
`FactionPlayersRequiredForTag`Members needed for a faction tag	Default`1`	Values1 or more	What it doesHow many members a faction needs before its owner can create a group tag.

Logging

servertest.ini: Logging settings
Setting	Default	Values	What it does
`ClientCommandFilter`Command log filter · advanced	Default`-vehicle.*;+vehicle.damageWindow;+vehicle.fixPart;+vehicle.installPart;+vehicle.uninstallPart`	ValuesA list, items separated by “;”	What it doesThe commands that are kept out of the command log, written as patterns separated by semicolons.
`ClientActionLogs`Logged player actions · advanced	Default`ISEnterVehicle;ISExitVehicle;ISTakeEngineParts`	ValuesA list, items separated by “;”	What it doesThe player actions that are written to the action log, separated by semicolons.
`PerkLogs`Log skill levels · advanced	Default`on`	ValuesOn or off	What it doesRecords changes in players' skill levels in the skill log.
`BanKickGlobalSound`Ban and kick sound · advanced	Default`on`	ValuesOn or off	What it doesPlays a sound for everyone when a player is banned or kicked.

Zomboid backups

servertest.ini: Zomboid backups settings
Setting	Default	Values	What it does
`BackupsCount`Zomboid backups to keep · advanced	Default`5`	Values1 to 300	What it doesHow many of Project Zomboid's own backups the server keeps on its disk.
`BackupsOnStart`Zomboid backup at start · advanced	Default`on`	ValuesOn or off	What it doesMakes one of Project Zomboid's own backups every time the server starts.
`BackupsOnVersionChange`Zomboid backup on update · advanced	Default`on`	ValuesOn or off	What it doesMakes one of Project Zomboid's own backups when the game version changes.
`BackupsPeriod`Zomboid backup interval · advanced	Default`0`	Values0 to 1,500	What it doesHow often the server makes one of Project Zomboid's own backups while it runs; the game gives no unit.

Questions

Questions and answers.

Which ports does a Project Zomboid server use?: UDP 16261 (DefaultPort) and UDP 16262 (UDPPort) by default. In our tests the server used no TCP port for players.
How many players can a server take?: MaxPlayers goes up to 254, not counting admins. The game's own file warns that more than 32 may cause poor map streaming and desync.
How do I add Workshop mods?: Put the Workshop item IDs in WorkshopItems and the mod IDs in Mods. The server downloads the Workshop items when it starts.
Why is my password ignored?: The game's own file says Password is ignored when you host through the Host button in the game. It applies to a dedicated server.

Next steps

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Project Zomboid server config generator (servertest.ini)

PVP

Time and sleep

Chat and names

Joining

Server listing

Safehouses and war

Rules

Voice and radio

Factions

Every setting in servertest.ini

PVP

Time and sleep

Chat and names

Joining

Anti-cheat and network

Server listing

World

Safehouses and war

Rules

Remote admin and Discord

Voice and radio

Factions

Logging

Zomboid backups

Questions and answers.

Related

Games

Guides

Run it with us

More tools for Project Zomboid