With a hand behind many of Valve's most influential games and series, such as the Half-Life 2 episodes, Portal, and Left 4 Dead, former Valve writer Chet Faliszek has announced that following his departure from Valve earlier this year, his new venture will be working on a new PC project with Bossa Studios.On Twitter, Faliszek announced that he will be heading a new project with developer Bossa Studios, which was previously known for its titles I Am Bread, Surgeon Simulator 2013, and Worlds Adrift. While details on the project are vague at the moment, Faliszek did tease that the title is "an unannounced PC action co-op game trying to do something new in the narrative space using AI."After 12 years with Valve working on many of its flagship titles, Faliszek announced back in May that we would be leaving the studio, with the new announcement painting a clearer picture of what he is up to next. In subsequent tweets, Faliszek also revealed that Bossa Studios is expanding its team across both its London and Seattle locations, for numerous roles across its creative and business departments (presumably) to staff up for the studio's next title.