The main contribution of our work consists in to provide a method able to systematically evaluate game interaction of children with down syndrome. With the evaluation method proposed in this work we conclude that such adaptations performed in the previous DEVAN method were suitable to evaluate game interaction (in terms of usability and fun) of children with Down syndrome. Although our method was validated using only the JECRIPE we can assume this game contains 3 unrelated mini games. And each sub-game contains different goal and stimulates different abilities. In the game, it is not necessary to finish one mini game to play another; all the sub-games are available since the beginning to play. And there is no global goal that involves the 3 mini games. Because of that, we can say that they are completely independent from each other.