In the “Cat Crunch” game, the patient’s task is to move the character to catch fish and avoid cans. This is accomplished through active movement of the lower limb. Flexion will move the cat to the right, and extension to the left. The game ends after time runs out or all lives are lost.

The game features various difficulty levels and can be customized to the patient’s needs. It can be played in any of the available modes: knee joint, ankle joint, or synchronized movement.