Casino game thumbnails must work like profile pictures to shine on small...

https://wiki-nest.win/index.php/How_to_Design_Thumbnails_That_Do_Not_Make_the_Interface_Feel_Crowded_69508

Casino game thumbnails must work like profile pictures to shine on small screens. Each thumbnail needs one strong focal point that grabs attention instantly. Use high contrast and bold colors to stand out in crowded lobbies