Running external Unity builds at runtime

Hi

I'm interested to know if it's possible in Unity by any chance to have a unity application that run external builds.
Example:
I have 2+ different builds of 2 different projects.
I want to create an application in a new empty project that takes those 2 or more builds at runtime and execute them.
Something similar to when you select the scene in the Unity Editor before building the application, but in this case you select external builds (from a folder, or stored online).
Re-creating the entire scenes in the new project is out of scope for my case

 

You can launch other applications from inside of unity.
https://docs.microsoft.com/en-us/dotnet/api/system.diagnostics.process?view=netcore-3.1

 

Thanks!
I'll try it out