How to Configure Your Icarus Dedicated Server

Complete Icarus ServerSettings.ini reference — server name, password, players, prospects, outposts, shutdown timers, and startup parameters.

Icarus uses ServerSettings.ini (INI format) for server configuration. Most settings live under the [/script/icarus.dedicatedserversettings] section header.

Config File Location

ServerSettings.ini

XGamingServer's Icarus image runs the Windows server binary (IcarusServer-Win64-Shipping.exe) through Wine on Linux, but the config path is Saved/Config/ directly — there is no WindowsServer/ subfolder. If you've followed older guides that mention WindowsServer/, that path doesn't exist on XGamingServer.

ServerSettings.ini open in the panel editor

How to Edit

Stop the server

In the XGamingServer Panel, go to Console and stop the server.

Open ServerSettings.ini

Click Files in the sidebar and navigate to Icarus/Saved/Config/ServerSettings.ini.

Make changes and save

Edit the settings under [/script/icarus.dedicatedserversettings]. Click Save Content.

ServerSettings.ini Reference

This is the actual default ServerSettings.ini on XGamingServer (taken directly from a fresh install):

[/Script/Icarus.DedicatedServerSettings]
SessionName=
JoinPassword=
MaxPlayers=
AdminPassword=
ShutdownIfNotJoinedFor=300.000000
ShutdownIfEmptyFor=300.000000
AllowNonAdminsToLaunchProspects=True
AllowNonAdminsToDeleteProspects=False
LoadProspect=
CreateProspect=
ResumeProspect=True
LastProspectName=

All settings live under [/Script/Icarus.DedicatedServerSettings]:

Setting	Default	Description
`SessionName`	(empty)	Server name. Currently broken in-game — use the `-SteamServerName` startup parameter instead
`JoinPassword`	(empty)	Join password. Leave empty for a public server
`MaxPlayers`	(empty)	Maximum players per session. Leave empty for the game default (8).
`AdminPassword`	(empty)	Password for admin commands. If empty, `/AdminLogin` with no argument grants admin
`ShutdownIfNotJoinedFor`	`300.000000`	Seconds before auto-shutdown if nobody joins. Set to `0` to disable. See Auto-Shutdown.
`ShutdownIfEmptyFor`	`300.000000`	Seconds before auto-shutdown when all players leave. Set to `0` to disable.
`AllowNonAdminsToLaunchProspects`	`True`	Whether non-admins can launch prospects from the lobby
`AllowNonAdminsToDeleteProspects`	`False`	Whether non-admins can delete prospect saves
`LoadProspect`	(empty)	Load a specific prospect by name at startup
`CreateProspect`	(empty)	Create a new prospect. Format: `[ProspectType] [Difficulty 1-4] [Hardcore true/false] [SaveName]`
`ResumeProspect`	`True`	Auto-resume the last active prospect on startup
`LastProspectName`	(auto)	Name of last running prospect (auto-populated by the server)

Startup Parameters

These are set in the Startup tab on the panel, not in ServerSettings.ini. The XGamingServer panel exposes the most-used ones as variables you can edit directly:

XGS panel Startup tab for Icarus

The default startup command on XGamingServer is:

wine ./Icarus/Binaries/Win64/IcarusServer-Win64-Shipping.exe -Log -SteamServerName=${SERVER_NAME} -PORT="${SERVER_PORT}" -QueryPort="${QUERY_PORT}"

Parameter	Description
`-SteamServerName="Name"`	Server browser display name (64 character limit). Use this instead of `SessionName`
`-PORT=`	Game port (UDP)
`-QueryPort=`	Steam query port (UDP) — XGamingServer assigns this per instance
`-UserDir=path`	Custom base directory for server data
`-saveddirsuffix=suffix`	Append identifier to Saved folder (useful for running multiple instances)
`-ResumeProspect`	Resume the last prospect
`-LoadProspect=Name`	Load a specific prospect
`-CreateProspect="Type Diff Hardcore SaveName"`	Create a new prospect on startup
`-Log`	Show the server status console window

For the full launch parameter reference see Launch Parameters.

Prospect System

Icarus has a unique mission-based system instead of a single persistent world:

Mode	Timer	Persistence	Description
Prospects	Yes	Temporary	Timed missions (Tier 1–5) — gear lost if timer expires
Outposts	No	Permanent	Persistent bases with no timer (ARCWOOD, ICEHOLM, HOLDFAST, Olympus)
Open World	No	Permanent	`OpenWorld_Styx` — full sandbox on the Styx map

Difficulty levels: 1 (Easy), 2 (Medium), 3 (Hard), 4 (Extreme). Hardcore mode disables respawning.

The server starts in a lobby where admins or players (if AllowNonAdminsToLaunchProspects=true) select which prospect to load. Set ResumeProspect=true to skip the lobby and auto-load the last session on restart.

For a traditional "always-on" survival experience, use Open World (OpenWorld_Styx) or an Outpost mode.

Ports

XGamingServer assigns the game port and query port automatically per instance — you don't need to forward anything. Check the Startup tab to see your exact ports.

Variable	Protocol	Purpose
`SERVER_PORT`	UDP	Game traffic
`QUERY_PORT` (`SERVER QUERY PORT` in panel)	UDP	Steam query (server browser listing)

Both must be reachable for the server to appear in the in-game browser and accept connections.