Kinectimals is a pretty simple, straight-forward game. My almost-3 daughter did have a little trouble grasping she has to stay infront of the censor to play, but loves pretend petting her tiger cub she named "Baby."
From a parent's perspective it's a game to get kids a bit more active, involved in what they're watching. It's not a workout, but it will improve sensory skills and hand-eye coordination. We plan out getting this for her for Christmas, as she'll be a bit more capable and interested in playing.