The present application discloses a preventative, diagnostic maintenance system designed for gaming systems. Sensor and software monitor, accumulate, store and share information for efficient maintenance of the gaming systems. Diagnostic and prognostic tests are run and results prioritized wherein minor and intermittent problems that indicate potential future problems are stored. When a technician visit is prescribed, the system will present via a GUI a visualization of the status of gamed devices, and, forearm the technician with the high and low priority information regarding the high priority problems along with the low priority problems for all the game devices at the same site. The technician will be able to bring the specific tools, programs and parts to service the high and the low priority problems of all the game devices.