Microsoft has announced that the Unity game engine will be free for developers taking part in the ID@Xbox program.
Will we devote marketing and promotion to promising looking titles in development? Of course. But we want to make sure the dev who’s working away in Omaha, or Coventry, or Chiba will have the same shot to realize their vision on Xbox One as one of my developer friends we hang out with in Seattle or at a trade show like GDC or Gamescom. Because at the end of the day, we want gamers to pick the hits. That’s what Xbox One is all about: One games store, the best discovery tools on console, and a powerful, equal playing field for all games, from developers big and small.
Read the entire press release here http://news.xbox.com/2013/11/xbox-one-unity-id