 Yuke's studios in Yokohama, Japan worked with WWE writers to create storylines for the season modes of each game. When WWE SmackDown vs. Raw 2007 was released for more than one console, Yuke's had to port their original game codes that make up each game mode and graphic designs to a new game engine that supported the new consoles. When new features are added to WWE 2K games, developers have to create new gaming codes for the features. Along with the features, the developers have to test the game for any errors. An improvement done yearly by Yuke's with each release of a WWE 2K game is the polygon count for the 3D models of the superstars in each game.
