Some people are saying that this game won’t run in Chrome because of some kind of third-party cookie nonsense. I’m not setting any cookies, so I don’t know what this is all about.
I can explain: Chrome/Chromium only talks about cookies, but it actually means cookies and local storage. Your game doesn’t use cookies, but it seems to use local storage from a 3rd-party domain inside a frame. Chrome/Chromium rejects that as it would have been a 3rd-party cookie, probably because it could be used in the same way.