HyperCard has lower hardware requirements than Macromedia Director. Several commercial software products were created in HyperCard, most notably the original version of the interactive game narrative Myst,[16] the Voyager Company's Expanded Books, multimedia CD-ROMs of Beethoven's Ninth Symphony CD-ROM, A Hard Day's Night by the Beatles, and the Voyager MacBeth. An early electronic edition of the Whole Earth Catalog was implemented in HyperCard.[17] and stored on CD-ROM.[18]