Gaming devices, systems, and methods are provided. The gaming device includes a display device, an image capture device to capture images of eyes of multiple users of the device, and a processor circuit. A memory includes machine-readable instructions that, when executed by the processor circuit, cause the processor circuit to generate, for each of the images of eyes of the plurality of users, gaze direction data corresponding to gaze directions of the eyes of each of the plurality of users and, based on the gaze direction data of the plurality of users, modify a gaming device function.