Manga artists guide the eye with panel shape, contrast, and breathing room....

https://www.bookmarking-fox.win/on-a-phone-a-manga-panel-and-a-casino-screen-face-the-same-challenge-guide

Manga artists guide the eye with panel shape, contrast, and breathing room. Mobile casino screens face the same challenge: make the main action obvious, keep controls readable, and help text stand out on a small phone