Mastery is an immersive game based on the neuroscience of trauma and evidence-based trauma therapy developed at Stanford’s Psychiatry and Behavioral Sciences Department. Mastery teaches players to identify their trauma triggers, become aware of their feelings, and replace trauma-based responses with healthy ones. The game takes place inside the player’s brain, but this isn’t revealed until near the end of the game. Players choose a young child or animal to guide through a series of challenges representing neurological events that occur under stress. They are supported by a guide who provides advice, encouragement, and rewards once each challenge is overcome.