Casino game thumbnails should mimic profile pictures to stand out on small...

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

Casino game thumbnails should mimic profile pictures to stand out on small screens. Focus on one clear focal point to grab attention quickly. Use strong contrast and smart cropping to ensure the key image remains visible even at tiny tile sizes