Different collections of icons, called decks,         are available for this game.     Look for them in the game section of Compuserve.     Some are quite challenging and at times you can even learn a thing or two. Institutions implicated in teaching and rehabilitation should give them a try. Each deck keeps it's own report. This should prove quite usefull for memory evaluation purposes.     To play a deck, copy it to a disk that has this game on it. Select the deck from the "Finder" and double click on it or choose open from the file menu.     The list is continuously growing. Check it out!