Ultima: The Dark Core
Ultima: The Dark Core is an interactive fiction written by Michael D. Hilborn (A New Breed of Dragon).
The game was originally designed to run under Netscape Communicator 4.0 or Internet Explorer 4.0, but is no longer compatible with newer versions of Internet Explorer.
Infinitron Dragon has since updated The Dark Core to make it compatible with Internet Explorer 8.0. It is not compatible with current versions of Firefox.