A slot series can look familiar from one release to the next, but thumbnails...

https://mill-wiki.win/index.php/How_Do_I_Explain_to_a_Friend_That_a_Slot_Sequel_Is_Not_the_Same_Game%3F

A slot series can look familiar from one release to the next, but thumbnails and small catalog images still need clear cues. Learn how a series name differs from a specific title, and why you should check the rules even when the art feels familiar.