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Factorio server settings: every option explained

FactorioUpdated Oct 5, 20266 min read

These are the options on the Settings, Game Settings page of a PlayNHost Factorio server, taken from the panel's own definitions. Rows marked read only are set by your plan or the server and cannot be changed.

All settings

SettingWhat it doesAllowedDefault
AFK KickTime specified in minutes to kick AFK players. 0 is off1 to 3 digits0
Factorio VersionWhich version of Factorio to install. Use "latest" for the current stable release, "experimental" for the newest pre-release, or an exact version number such as 2.0.77. This is also what the Mods tab filters mod releases against, so a pinned version only offers mods that actually work with it. Changing this reinstalls the game files the next time the server is reinstalled.3 to 12 characters, letters and numbers and these symbols: .latest
RCON Enabled?Opens a remote admin console so tools like a Discord bot can run commands on your server. It also needs a port, which you add under Ports & Network, and a password below - without a port it stays off.on or offa default is set, change it
RCON PasswordPassword for the remote admin console, used only when the switch above is on. Letters, numbers and the punctuation ! @ # % ^ * ( ) _ + = . , : ? - are allowed, up to 64 characters. Spaces and quotes are rejected because they would be split apart before the server saw them.up to 64 characters, letters and numbers and these symbols: ! @ # % ^ ( ) _ + = . , : -empty
RCON PortThe port the remote admin console listens on. Add a second port to your server under Ports & Network and put it here; leave it empty and the console stays off even when the switch above is on.a numberassigned to your server
Auto Save IntervalTime between auto saves specified in minutes1 to 3 digits10
Save NameThe save name for the server.1 to 100 characters, letters, numbers, dashes and underscoresgamesave
Auto Save SlotsLeft here because it still reaches server-settings.json and a mod or scenario can read it, but it does not control how many autosaves this server keeps.1 to 3 digitsset by your plan
Server DescriptionDescription of the game that will appear in the listing.up to 200 charactersA factory hosted on PlaynHost
Server NameName of the game as it will appear in the game listingup to 100 charactersA PlaynHost Factorio Server
Server passwordThe password for the server.up to 40 charactersempty
Server TokenYour factorio.com API token - sign in at factorio.com/profile and copy the token shown there. It is not your password. Paired with Server Username it does two jobs: it lists your server in the public server browser, and it authorises Mod Portal downloads from the Mods tab. Treat it as a secret. Leave it empty to skip both; uploading mod .zip files into the mods/ folder under Files works without it. Letters and numbers only.up to 100 characters, letters and numbersempty
Server UsernameYour factorio.com account name. It does two jobs: it is the account your server is listed under in the public server browser, and together with Server Token it is the credential the Mods tab uses to download from the Factorio Mod Portal. Leave it empty to skip both - the server still runs, and you can still add mods by uploading their .zip files into the mods/ folder under Files. Letters, numbers, dots, dashes and underscores only, 3 to 40 characters.letters and numbers and these symbols: _ . -empty
ScenarioRun a scenario instead of a normal save. Enter the scenario name exactly as the folder is spelled in your scenarios/ directory (for example: wave-defense). Scenarios bundled inside a mod are written as mod-name/scenario-name. Leave this empty to play a normal save game - setting it means Save Name is ignored and your existing save is not loaded. Letters, numbers, dots, dashes and underscores only, with at most one slash; anything else is rejected because the server would fail to start.letters and numbers and these symbols: _ . -empty
Auto-update serverCheck for a new Factorio build each time the server starts. It follows the channel set above: "latest" tracks the STABLE headless build, which is what the Factorio client updates itself to, so your players can still connect. A pinned version number is never updated. Saves and mods are never touched.on or offon
Maximum Slots (read only)The number of players allowed on the server at once. The limit comes with your plan.set by your plan or the serverset by your plan

Good to know

  • Settings are written into the server's configuration when the server starts, so restart the server after changing them. Changing Factorio Version does not change the installed game by itself. To switch version, ask support, or change the server type with a backup first, because changing it deletes the server's files by default. The Maximum Slots value comes with your plan and cannot be edited.
  • The panel saves a value when you leave its field. If the value is not allowed, the panel tells you and keeps the old one.
  • Passwords and tokens are not listed with a value. Each server starts with one set for you, or with none, as the row says. Set a password before you invite players if you want a private server.
  • To open the page, follow How to set up your Factorio server or How to change your server settings.

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