“…Similar limitations can be found in [8,17,18,33]. In the context of child-computer interaction, other facets of touchless gestural interaction have been investigated, mainly in order to understand the effect of such novel paradigm in learning activities [1,5,26], but also for gaming purposes [4,5,12]. Several applications described in the literature employ users' silhouettes [14,36], but some authors opted for both "stick-man"-shaped avatars (e.g.…”