Casino game thumbnails should behave like profile pictures to stand out on...

https://emilysgreatjournals.quantlynix.com/posts/how-do-i-pick-background-detail-that-supports-the-subject

Casino game thumbnails should behave like profile pictures to stand out on small screens. Focus on one clear focal point so players instantly recognize the game. Use strong contrast to make details pop and crop tightly to highlight key visuals