When my daughters were very young, the card game was very good for helping kick start maths and strategy
The Nintendo DS games could get quite complex too especially after they introduced fighting with two Pokemon at the same time so that combinations of attacks could be quite effective, after gathering and training a team of say five pokemon for duels with someone else at a similar level of progress and connecting up machines .. That could be engaging.
My daughters have since grown up, and told me about Pokemon Go, in summary :
Good for a walk = Plus point
No strategy whatsoever = Minus heaps of points
Probably need to re-enable phone settings again such as Geo location tracking = Minus lots more points
That was me out. Didn't even bother grabbing it.
I hear apple picking has become a lot easier too for street urchins wanting to pawn mobiles from soft targets who have just discovered they have legs which cant run after a push bike quick enough.