More than 200 competitors took part in the games in Colorado last week and the British team competed in archery, cycling, swimming, track and field and sittingvolleyball.
It is hoped that lesser-known sports such as sittingvolleyball, boccia and wheelchair basketball will attract large crowds, and organisers are optimistic more affordable prices will help sell the remaining tickets.
The prince, a veteran combat helicopter pilot, mingled with the 35-member British team and then sat on a gymnasium floor in a circle of 12 sittingvolleyball team members, batting the ball around amid whoops and laughter.