A slot series can look consistent across releases, but small details matter....

https://www.web-bookmarks.win/a-slot-series-can-keep-a-familiar-look-across-releases-but-thumbnails-and

A slot series can look consistent across releases, but small details matter. This article shows what thumbnails and small catalog images reveal, why a series name isn’t a specific title, and why you should check the rules even when the art feels familiar.