My daughter and I were discussing middle school (she will be in 6th grade next year). She said she wanted to replay DragonBox to help get her ready for algebra class. She mastered the game in a day last year and still recalls it as her favorite game "that actually taught her something".

Our child is older and he loves the 12+ version. Made him do a little bit every day, he thought it was a treat and I was thrilled to see him gradually absorbing the concepts of algebra.

Not sure whether it's connected but he now says he likes maths at school :-)