ChillFish is a breathing exercise disguised as a biofeedback game that assist children to calm down e.g., prior to bedtime. Designed in LEGO, the ChillFish controller works as a breath-based input device in which the child can control a virtual (puffer fish) avatar in an underwater world.
The ChillFish gameplay is based on an underwater 2D world, where the player character (a puffer fish) has to collect as many star fish a possible. The vertical position of the puffer fish is controlled by the child’s inhalation and exhalation through a physical LEGO fish controller. When the child breaths into the ChillFish LEGO controller, the virtual puffer fish moves towards the top of the screen and at the same time the puffer fish expands in size. The star fish are positioned so that in order to collect them all, the child has to apply a relaxed breathing pattern.