How a game design student in California brought Portal to a graphing calculator December 11, 2012 12:00 PM Jacob Lopez Jacob Lopez Twitter Facebook Profile Recent Stories: Frostbite Go: EA wants console-grade graphics on your mobile devices Former Activision U.K. PR executive pleads guilty to embezzling Call of Duty money (Updated) Surprise! The iPad 5 will be thinner and lighter This guy made Portal playable on a $90 graphing calculator.