My first meeting with Unreal was in University, 9 weeks ago. I knew that game engine but always prefered the Unity's power. Our task was simple: create game using only things, that we can find in Unreal Starter project. That means we cannot import anything, even sounds and textures.
I know that sounds horrible. That sounds like it would be no sounds. So I have created appearing texts on a screen to "tell players the story". I have created my own blueprints, for systems you cannot find anywhere in the Internet. (That was extremely hard... but done.)