An embedded additional user interface 10 includes a web page display screen 20 and an embedded processor 30, and is incorporated into a gaming machine 40 that in turn includes a gaming screen 50 and a gaming processor 60. Because of security procedures applied for digital signing and certification of user selectable programming elements, the embedded additional user interface 10 employs an interface build application 79 such that the user can select and modify the look and feel of the web page display screen content. The interface build application enables content to be presented on a web page display screen that can track to an individual player. The interface build application also enables a casino user to update current casino promotions for its players in a timely manner, as well as present customized marketing messages, which can even be targeted to individual players. The casino user can customize the look and feel of web page display screen content to make the game player environment more exciting and more conducive to extended player gaming sessions.