Released late last year, Infinity Blade ushered in a new era of graphical fidelity in mobile phone games and delivered on Epic's promise to turn its "Epic Citadel" tech demo into an actual game. The Salt Lake City-based team at Chair Entertainment - led by brothers Donald and Geremy Mustard - delivered another hit for Epic on another digitally distributed platform, opening doors for more Unreal Engine licensees all the way. At last year's GDC the brothers Mustard delivered a panel on their XBLA hit Shadow Complex and this year it's Infinity Blade, titled "Infinity Blade: How We Made a Hit, What We Learned, and Why You Can Do it Too!"

"We got a call from Epic saying there's this opportunity," Donald Mustard told a packed GDC auditorium. Epic told him, "Mobile games are really taking off and we've secretly had part of the engine team getting the Unreal Engine to work on mobile devices over the past year and it's ready to go [...] and we really want to get a game out this year that really shows it off. Do you guys want to participate in that?" Mustard replied, "Absolutely." But there was a catch.