Mario games are children games that we adults love to play too. 
If we adults confess among each other we love it its like a guilty pleasure.
EDIT: Think of baby porridge/meals. I still buy for myself one of those that my mother used to give me when I was a little toddler. My sister buy it for my nephews and her and my brother in law got addicted to have it for breakfast. So definitly something for children but beside me, my sister and my brother in law I know many other adults who eat it on a regular basis. Just because it's meant for children doesn't mean adults wont like it too.
If we adults confess among each other we love it its like a guilty pleasure.EDIT: Think of baby porridge/meals. I still buy for myself one of those that my mother used to give me when I was a little toddler. My sister buy it for my nephews and her and my brother in law got addicted to have it for breakfast. So definitly something for children but beside me, my sister and my brother in law I know many other adults who eat it on a regular basis. Just because it's meant for children doesn't mean adults wont like it too.
