The present disclosure relates generally to a system and method for substituting images, graphics, video, and other content presented by an Electronic Gaming Machine (EGM during execution of an electronic game. Embodiments can include a mobile application which can be used in the casino environment, for example, and through which players of electronic games may choose different game content either out of a pre-defined set of content that can be updated and/or supplemented over time or by uploading their own such as photographs, icons, graphics, etc.