Quote Originally Posted by Lauren View Post
The game worked fine when Windows 10 released
Yes but Windows 10 was officially released in July 2015 and it wasn't officially supported by Square Enix until November 2015.

Windows 11 may work straight from the start, but you may wish to wait a little bit, if only for everyone else to find any problems first. One thing I can think of that may require changing is the launcher which at the moment is using components from Internet Explorer which may/may not exist in the final version of Windows 11.