Electronic Arts is developing an American football experience unlike anything it’s made before, the company said in a memo shared publicly after closing BioWare and laying off 400 people across the company. In trying to spin the news positively and toward the future, the memo’s attributed writers, chief studios officer Cam Weber and chief operating officer David Tinson, spoke about several of the publishing giant’s upcoming games, including something EA is calling Project Gridiron. What is Project Gridiron? The memo’s…