While E3 has been dead and buried for a few years now, Geoff Keighley’s Summer Game Fest has stepped in to fill that void. In what is undeniably the busiest month in video game news, Summer Game Fest is just the tip of the iceberg. The main event has several themed showcases that officially accompany it, while other publishers and developers from across the world also host unaffiliated events of their own. Two of the biggest names in gaming–Sony and…