Personally, I always loved the classic, side-on Mario games and thought the new features of this looked fun, but the best feature was the fact Nabbit and Yoshi don’t take damage. My 4 year old is autistic and wants to play video games with me but struggles. This allowed us to get through the levels together and he was so happy ^_^ btw, they still die from falling, it still took a LOT of lives, haha.
I don’t know how many others bought it to play with their younger kids but it worked for me!