Need help identifying 1980s toy?

I need help trying to identify the name of a 1980s toy. It was manufactured by Mattel (I think), it came out in the late 80s and was a series of plastic cassette tapes that had small board games inside of them. It had built-in spinners and the tiny magnetic pawns could be neatly stored away inside the cassette tape itself. There were like 4 different games: One of them was based upon Mall shopping, but I forget the name of all of them. I think the name of this toy had the name "Sliders" somewhere within its context, but Im not sure about that either.