Last tested working: September 2025

So this is an updated method that lets you do EVERYTHING within Steam launch commands, no need to touch any folders or files. Following up from BobidiousB who made the original method here, go buy him a spice cookie

Bypass the funcom launcher

Please note, this beginning section is referenced from BobidiousB who did fantastic work skipping the launcher, original post: https://steamproxy.com/sharedfiles/filedetails/?id=3493727115

Go to the game in Steam, click the gear icon > manage > browse local files.
In this folder in file explorer, go to "DuneSandbox\Binaries\Win64"
Right click "DuneSandbox_BE.exe" and "copy as path"
Back in steam, click the gear icon > properties.
In the "launch options" field, paste the path in, and add " %command%". Ultimately, this will look like the following. (Note the quotes around the path to the exe are only necessary if there are spaces in the path to the exe.)

Example:

"D:\SteamLibrary\steamapps\common\DuneAwakening\DuneSandbox\Binaries\Win64\DuneSandbox_BE.exe" %command%

Same thing in Properties > Steam Commands, add these two arguments at the end of your previous command:
-nosplash -nostartupscreen

So your final Launch Options should look like this example:

"D:\SteamLibrary\steamapps\common\DuneAwakening\DuneSandbox\Binaries\Win64\DuneSandbox_BE.exe" %command% -nosplash -nostartupscreen

Please make sure to follow the exact SPACING so it will work properly.

Voila enjoy, now go wake the sleper