This research will assess and map four different exergame sports (bowling, boxing, tennis, and a mat/aerobics) games developed by Xavix for behavioral principles and evaluate how those behavior change principles impact game play sustainability. In the first phase of the study, we mapped and coded video games based on behavior contingencies of antecedents to the behavior, the behavior, and consequences to the behavior. Each of the games and subgames will be categorized as hi fidelity and lo fidelity.