This is an interesting boxed set released by Sony at the very dawn of the CD era. It was originally sold along with a Sony CD-ROM drive as a bundle, and was considered state of the art at the time. These are some of the first commercially sold software in CD format and at the time it was common to sell encyclopedias, reference books, and databases for hundreds of dollars each, on CD. The included catalog has several dozen such products, as well as a handful of games such as Battle Chess. Today we take for granted all the free databases of information that are available to us on the internet, but not so long ago, you had to shell out big bucks if you wanted access to certain information.