This game is sadly rather boring and very easy. While it is a kids game and i can see why it's easy, this is too easy even for children and it's really not as entertaining. It took me days to complete this game because i kept quitting the game to play something else due to how low my interest with it was as i went through it.
The first few worlds and the arcade machines offer some challenge, in which children can enjoy. However... the last two worlds are jokes and the bosses offer no challenge. I would really be concerned for my own children if they ever had issues fighting any of the bosses in this game, as they are easier than some of the levels in this game. They all have at least 3-4 health points and they all get defeated by a certain, very obvious way. It's obvious how many hit points they have just by noticing these things. And it mainly consists of them getting hit with their own attacks.
The final 2 worlds and the bosses in those worlds are jokes though. They are all very short. They are all very easy. The first of the two is basically a waste of time (even the cutscene after the last one calls it pointless) and the final and second of the two worlds is the biggest disappointment, as it is the easiest part of the entire game. The player should be given a challenging final few levels so that when they complete the game, they feel like they succeeded in something. However, because everything in the final world is so easy, it offers no challenge and doesn't give you any rewarding feeling. Just huge disappointment.
It's also very bad when you have to redo an entire level again just to get a token that is required to 100% the game, because it just adds to the boredom of the game. And once you get all the fruit to play the arcade machines, not only are you disappointed by now because of the fact that the optional, bonus arcade mini games are HARDER than the final world of the actual game, but they are all so short that they don't really last long and still don't feel very rewarding.
If you are an achievement hunter, buy it because this will be a breeze for you to get every achievement in the game. Outside of getting achievements, this game should be avoided because it will bore you and your children, it's not a fun game and there are far better games to get on Steam for your child that are cheaper than this one.