I like how they have interactive games for kids as well! They make it so easy by just letting you know which ones your kid likes or dislikes best (which is great!).
The only thing i dislike sometimes when we use them during my baby shower party was because there were too many children running around playing at once but other than this not much else really stands out from positive things.. This should be used more often especially since its free!! Great way get parents involved while also having fun activities going along side their childs birthday parties.