You can see them for yourself, and you can enter directly from Freebitcoin.

I tried DPlay, you can log-in with a Freebitcoin account, they are connected, but for ClubRiches, you need to create an account, as I remember. I played on DPlay because it was easy to log-in, and we can move FUN tokens between them... I had some pretty nice wins (maybe I even shared some of them here in the thread), all in all, simple casino with some providers & games, at least at that time.