Hi dianne, I moved your post over to the Casual Games forum.
I can't give you a definitive answer to your question because I do not believe that all of their games have been tested with Windows 11. Having said that, other players I know using Windows 11 have reported no issues in general except when you start going back to games that came out around 2014 or prior to that when some of the older games have problems. One of our computers has Windows 11 on it and we have had no problems thus far, but again the games we have played on it have all been newer ones.
Whenever a new operating system comes out, certain games are going to have issues with it, unfortunately. That is why it is in general a good idea to keep a computer around with an older operating system if you are able to do so.