Yeah we're just used to unity, in the future we might try to take some time to learn Godot or Unreal.

Sorry for the late response again, i'm not really active on social media haha

sorry for the late response, we work quite well with Opsive tools like the ultimate inventory system, but the vast majority of things seen in the videos are made entirely by us, textures and 3d models are all made by me and my friend who's directing the project for example :)