http://www.xbox.com/en-US/developers
   https://wiiu-developers.nintendo.com/
   https://www.playstation.com/en-us/develop/
   https://www.steampowered.com/steamworks/developmenttools.php
   https://developer.apple.com/library/ios/referencelibrary/GettingStarted/RoadMapiOS/
   I think that's everybody. Oh there's Android too.