Is it possible to run a normal unreal binary in headless mode?

I’d like to run a standard unreal binary in headless mode as I just want to run it in the background to simulate physics and output to a log. Is it possible to do this, or must I compile a dedicated server to achieve headless / background mode, even if I don’t want to use any unreal networking features?

Hey miraan94-

Can you explain what you mean by “headless mode”? There should be no problem with opening the editor and having it in the background while another program has focus (this is what I assume you mean). Keep in mind that when the editor does not have focus, the FPS and memory usage drop in order to save on resources while continuing to run.

Hey miraan94-

We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and we will follow up.


I assume that they mean that the executable should run without opening a window.
Such a feature is particularly useful in automated environments (build machines, automated tests setups) where processes are not necessarily allowed to open operating system windows and where the presence of such window only brings undesirable potential input events which are irrelevant to the action (build/coook/tests/etc.) being undertaken.

Yeap, if anyone got any info on this it would be appreciated. Cannot find any info on this anywhere.