I've downloaded Unreal but yet to explore it - just not enough hours in the day and enjoying getting acquainted with Blender rn.
Definitely interested in making some interactive and possibly VR stuff in Unreal though.
I'm not so into making totally generative stuff tbh but there are some cool tools I've messed with for generating complex geometry that you can then play with. Check out the (free) add-ons Tissue and jsplacement if that's your thing.
My python skills are rudimentary at best but I'd like to modify the excellent Molecular add-on to make it pay attention to object rotation, honestly not like to happen in the near future though.
Couldn't help but notice that your name is viscosity, that's one of my favourite things to play with in Blender: