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\section{Discussion}  This study underscores the value of games in not only increasing children's awareness of their physical activity levels, but encouraging them to increase them. Such an approach can foster long-term behavioural change and therefore future research should seek to incorporate longer intervention periods. The present pilot study, as opposed an observational or randomised controlled trial, reportson the following components of the study design:     \begin{itemize}   \item what  the effects of the design choices were, choice  and \item guidelines on how the components can offers specific component guidance, which could  bereused or  refined for longer-running studies.   \end{itemize} future research.  \subsection{Mission 1}  As shown in Figure \ref{fig:mission1}, the fastest teams completed the assault course in less than 80 seconds, but were active for around 10-20 minutes during the session. This shows that the time spent engaging with the activity itself does not have to last the whole session to be effective. For this activity, the time spent \emph{very active} (as shown in Figure \ref{fig:fit1}) does not seem to be increasing or decreasing significantly over the week, probably due to the total engagement time being so short.