Adolescents with Cerebral Palsy (CP) are less physically active when compared with their typically-developing peers. Youth with CP who use mobility aids may experience a decline in function as they enter their adolescent years and, in some cases, move from walkers to wheelchairs. In addition, even when active, youth with CP tend to participate in more solitary activities. Exergames are multi-player exercise video games that can be used to promote physical activity and social interaction for youth with CP. This project aims to determine if a home-based exergame intervention can provide fitness and social benefits to adolescents with CP (GMFCS level I, II and III), and typically-developing peers of the same age.=