T³ Monster is a set of teaching aids for developing fine motor skills that combine light and sound effects. Each monster is designed to focus on a different muscle group in the hand to address different training purposes. The associated app tracks the data generated by playing with the different monsters so that clinicians can monitor progress and adjust the training. To make the game more interesting and interactive, a rich and lively interface along with stories and pictures was created. This also encourages parents to play with their child, enhancing parent-child interaction while training at home.