An anonymous reader writes "Gamer rage is a common phenomenon among people who play online, a product of the intense frustration created by stressful in-game situations and an inability to cope. It can have significant impact on the gamer's ability to play well, and to get along with others. To combat this rage and train gamers to deal with the stress, visual designer Samuel Matson of Seattle has created the Immersion project, integrating a pulse sensor tied to a Tiny Arduino with Bluetooth into a headset to monitor the gamer's heart rate. The heart rate data is sent in real time to the gaming PC, where it is displayed in the game. Matson even created a simple FPS using the Unity game engine that varies the AI and gaming difficulty based on the user's heart rate. Using this system, the gamer is able to train themselves to recognize the stress and learn to control it, in order to make them a much more agreeable and competitive player."