An area often overlooked when trying to increase physical participation is affective expectations or judgments (expected pleasure and enjoyment). Affective judgments are a central construct - in some form - in many of our popular health behaviour models, yet few interventions have focused on the modification of affective expectations, despite its reliable and robust association with physical activity. One such group of activities with this potential is interactive exercise videogaming (exergames). Exergaming is a relatively unexplored topic but early results and commentary have been very controversial; the topic has generated as many reviews as it has experimental trials. Overall, the emerging evidence suggests that these games can significantly increase energy expenditure similar to moderate intensity physical activities and these can translate into health-related fitness improvements. The research conducted from our group on this topic also shows this finding. Our studies employ exergames within the context of traditional exercise bikes (i.e., exercise bikes that interact with video games) because they demonstrate physical activity in the moderate to vigorous intensity range that results in marked fitness changes. Despite these positive effects, limited research is available to understand adherence to exergames. Further, of the available literature on exergames and exercise adherence, reviews find that the exergame conditions typically report higher adherence than various control conditions but long-term change is negligible or advantages diminish across time. Our research on the topic mirrors these overall conclusions. For example, in our family-based home pilot study of Game-bike, we showed significantly higher enjoyment and use for children in the exergame condition compared to a control bike across six weeks, yet the prominent differences were within the first three weeks and these were sharply declining in the later weeks. Thus, exergaming research that attempts to foster maintenance is needed to demonstrate that the initial high participation rate can be sustained within the context of the family home. This was the key recommendation from recent systematic reviews of exergames and it forms the rationale for the innovation in this proposal.