By far the best innovation in the franchise! My 4 year old picked it up quickly and it's fun from the first second.
The progression of the game keeps you involved and adapting to new environments from the very begining. Having only spent a short amount of time playing so far and having watched my 4 year old jump right in, I have to say that my first impression is of an attention grabbing, fun filled and challenging game. Although mostly intuitive, anything that seems initially difficult becomes managable in a quick time frame reducing frustration.
Gotta say it's a keeper for now, and get back to playing!