Yep! It is indeed true that Nintendo is making games on iOS but there is some downsides to that though. One of the big down sides is that Nintendo said that they may not bring “Mario” or any of there other character over to iOS just yet. Why? Well because Nintendo does not want to lose there own products to iOS. but who knows Nintendo might actually put some of there bigger titles on iOS.
There was some rumors going around about Nintendo bring Pokèmon over to iOS too! The reason why people would say that is because there is already a Pokèmon game for iOS so most likely we will see a Pokèmon game for iOS as well as Mario and Donkey kong, as well as a lot more famous Nintendo characters. Hopefully.