this is the only good Mario maker game for mobile. It has things that should be in Mario maker but are not. My only problem is that you can't shell jump which in my case makes me sad, because I really like kaizo levels so it just doesn't work out. You could add an update to the app and make it so when you throw a shell of of a wall you could make it so you could jump of of it. I find that this is just like SMW and SMB 3. Another problem which might only be for me I have to go in. Then it says it's not working then I go in again and it works. If you fix those two problems you could definitely get some new variety for levels. There could be millions of more levels that have different secrets and special spots to reward the person and there could be a lot more challenging levels to other players.