If you were in high school in the past few years or know someone who has been you know that almost of the kids now-a-days use those fancy TI-83+ calculators for math class. You also know that the calculator can run programs like probability simulators and even games. Well now you can play Doom. It just goes to show you that when you sit a bunch of kids in a room for 40+minutes a day with calculators they will come up with something cool to do with them.