For its time, the client provided a rich graphical environment allowing users access to instant messaging, games, music, message boards, and web-like hyperlinked navigation screens.
Excalibur provided the platform for add-on functions called plugins.
These plugins included games with/without animation/sound and expanded functions for file searches, local and Internet e-mail, Fido net, Who's on, chat, changing handle/password, editing your account info, etc.
Others used very clever screen changes to provide different degrees of visual input.
Due to programming limitations, Excalibur BBS does not work properly on Windows XP or newer.