Involve UI within the game world.
There are two sides to UI: Usability and Aesthetic. Although the User Interface in Escape doesn't exist in the game world, it is a part of the game and should fit in seamlessly.
Made with Unity
Key in-game objects, such as the brick or the torch, could be picked up and manipulated. Differentiating them from the background with a high-contrast border was important.
I created an impactful moment in the story by allowing an event in the game world to affect the UI.
This blood-splattered dialogue box left players speechless.