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To upload an Icarus prospect to your FREAKHOSTING server, stop the server, copy the prospect’s .json file from %LOCALAPPDATA%\Icarus\Saved\PlayerData\<SteamID>\Prospects\ on your PC, and upload it unchanged to Icarus/Saved/PlayerData/DedicatedServer/Prospects/ in Files. Start the server and load it in the lobby or with LoadProspect. Never rename the file.

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Before you start

  • Make a copy of the prospect file on your PC. RocketWerkz warns that changing the file name or the JSON inside it corrupts the prospect for good.
  • Make a panel backup of the server.
  • Know your Steam ID folder: it is the long number in %LOCALAPPDATA%\Icarus\Saved\PlayerData\.

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How to find the prospect on your PC

  1. Close Icarus.
  2. Press Windows + R, type %LOCALAPPDATA%\Icarus\Saved\PlayerData and press Enter.
  3. Open the folder named with your Steam ID, then Prospects.
  4. Find the .json file with your prospect’s name, for example MyOlympus.json.

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How to upload the prospect to your server

1

Stop the server

Open your server in the Game Panel and click Stop.
2

Open the Saved folder

Click Files and open Icarus > Saved.
3

Create the folders if they are missing

On a new server the folders don’t exist until a prospect has run. Click New folder and create PlayerData. Open it, create DedicatedServer, open it and create Prospects. The path is now /home/container/Icarus/Saved/PlayerData/DedicatedServer/Prospects.
4

Upload the file

Open Prospects, click Upload (or drag the file onto the page) and choose your .json file. Wait for Upload complete.
5

Start the server

Click Start and wait for the ready lines in the console.
Icarus Saved folder in the FREAKHOSTING Game Panel File Manager with the New folder, Upload and New file buttons

Files at /home/container/Icarus/Saved after the first start

For files larger than the browser upload handles comfortably, use SFTP.

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How to load the uploaded prospect

After the first load, the server resumes this prospect at every start while ResumeProspect=True. Clear LoadProspect= again if you want to switch prospects in the lobby later. See resume prospects.

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How to download a prospect from your server

Stop the server, open the Prospects folder in Files, click … next to the file and choose Download. Put it in your local Prospects folder to play it on your PC.

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Frequently asked questions

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Can I rename my prospect before uploading?

No. RocketWerkz warns that changing the file name or the JSON data corrupts the prospect, and the damage can’t be undone.

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Do my characters come with the prospect?

No. Characters are stored on each player’s own PC. Every player joins with their own character. See delete a character.

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Can the server run two Open Worlds at once?

No. A dedicated server runs one prospect at a time. Keep several files in Prospects and switch between them in the lobby.

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Why doesn’t my prospect show up in the lobby?

Check that the file is in Icarus/Saved/PlayerData/DedicatedServer/Prospects/, that the name is unchanged, and that you uploaded it with the server stopped.

Icarus server guide

Every Icarus page in one place.

Prospect settings

Create, load and delete prospects.

Resume prospects

Load the last prospect after a restart.

Stuck in the lobby

Load a prospect automatically.

File Manager

Upload, download and create folders.
Tested by the FREAKHOSTING team on our Game Panel on 3 November 2026 (Icarus Dedicated Server), and checked against the official RocketWerkz migration guide. Steps may differ slightly if the game changes.

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Need Extra Help?

If you encounter any issues, our support team is ready to assist:

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Last Updated: November 2026