When Jenova Chen released Journey ten years ago, he wanted to prove to the world that video games were art. Now, everyone pretty much agrees they are.So why, he asks, are they still not getting the wider cultural respect they deserve?"You go to a party, and someone says, 'What do you do?' If you say, 'I write scripts for movies'...They treat you as if you are an author of a book or a poet…You're a servant for the public.