So far as game-play goes, it functions reasonably, though, with moves that tell you to hold Z then move the remote, you really need to press and hold while making that movement if you really want it to work on your first try.
What gives me a hard time are the graphics. I like the show, and when I saw the in-game graphics, I was highly disappointed, some lines were invisible, while some were poured on thickly, and it is obvious that the artist from the show had nothing to do with character design. Physical movements matched the characters reasonably, the mouths don't move right, and the eyes... just freak me out.
The game also allows you to play as Momo for collecting certain items. unfortunately it is in third person, but still in 'Momo vision' those who have not seen the show, that is where it shows what Momo sees, and its blurry around the edges and clears in the middle. In third person, that means the only thing you can see clearly is Momo, and the swirly blur gives me a headache after a while.
They do have customization, at each level, you can equip new skills, but you only have your main 4 for combo, then four defencive, offencive and special moves. An element not in the show at all however, is that you have to collect and equip your characters with armor and trinkets to make them stronger.
Overall, this was an attempt to make money off a show, and they could have done a lot better if they had a desire to.