For the final project of my master's degree in Videogame Development in the University of La Laguna, I collaborated with the University Hospital of the Canary Islands to create a game that could be used to rehabilitate patients with limited mobility in their arms due to brain damage. Users can play this game using an eye tracker, which is a device that can register the position of the player's gaze. This device is used to play because the rehabilitation method which will use this game makes the player control a virtual object using their eyes, which will stimulate certain parts of the brain that overlap slightly with the regions that manage the movement of the arms.
In the game created for this project, players control a fish that must traverse multiple levels to achieve objectives like collecting prizes and avoiding obstacles. That fish moves automatically to the right, and the player only needs to make it go up or down with their gaze.