1. A television game system for printing a game image of a virtual world, comprising: a game image processing apparatus for processing said game image; and a printer for printing the game image processed by said game image processing apparatus, said game image processing apparatus executes the steps of: generating said game image by executing a game image generation program according to a game progression dictated by a user playing a game; selecting an arbitrary part of said generated game image, according to instructions from said user; generating transition information of a game image representing said selected arbitrary part of the game image; and recovering the game image arbitrarily selected by said user by operating said game image generation program using said transition information as an operational parameter, and said printer executes the step of printing said recovered game image.