To use a game : download the .cas, .cat or .fxi file and open it with CasioCom or any other communication utility. With CasioCom, you can play it on your PC or send it to your calculator.
If you want to submit your own game or program, contact me.
A Wall Street simulator : buy and sell at the right time and make a fortune.
For more games & programs, I suggest to use the Links section to find other Casio sites with many games & programs.