During the four weeks of exergame play, participants were contacted by telephone by study staff three times, approximately once a week, to complete short surveys about their game play and attitudes about the exergame, and to address any questions from participants. At week four, participants were mailed an accelerometer and instructed to wear it for seven days. After week four, a second home visit was conducted to collect the game cartridge and system, administer final surveys to the participant and a parent, and distribute the incentive. Participants received $50 for completing all study measurements.