since 2007 the assassin's creed videogames have allowed players to bump off bad guys throughout periods of history as varied as renaissance italy to ancient greece. the most recent entry in the series, assassin's creed: valhalla, transports the action to the ninth century as vikings attempt to settle in britain, something that doesn't go down that well with the locals. valhalla's developers have worked really closely with historians and archaeologists to ensure historical accuracy and real locations like this one, portchester castle on england's south coast, appear in the game. we tried to research the kind of people we would meet there but also their habit, the way they would talk, the way they would live their daily lives. i tire of raiding, harold. and the idea is notjust the aesthetic but also philosophical, what are their thoughts of the period, what are they looking for in their daily lives? but what do you do with all of that research and work, after it's been put to work building the world in the game?