Casino game thumbnails should behave like profile pictures because both need to...

https://direct-wiki.win/index.php/How_to_Make_a_Bright_Focal_Point_Pop_Without_Making_Everything_Neon

Casino game thumbnails should behave like profile pictures because both need to stand out clearly at small sizes. On small screens, a single focal point grabs attention quickly. Use strong contrast and tight cropping to highlight that focal area