The Flipsiders series of games from Milton Bradley all came in plastic cases designed to look like audiotape cassettes. The board flips out from the cassette-sized case, from where the tape heads normally would read/write the tape. The magnetic pawns are stored opposite, in a small compartment in the top edge of the "cassette". The "reels" of the cassette are spinners for random numbers or events.
Gary Fixler dissected Checkered Flag and provided a photo gallery on Flickr.com.
During the initial production run, there were six different games in the collection. According to Anjar's web site, there are currently more than 20.
Nominally related to Cassette Juego