On making a core Pokemon game for Wii U
“With the bottom screen there’s a feature called the Player Search System. It’s enabled one to look for and find other players in the same area, so if you’re out and about and there are other people playing Pokémon X and Y, you can see the icons of those trainers on the bottom screen. Just by touching the icon of that trainer you can immediately propose to battle or trade with that person. It’s one of the key features of Pokémon X and Pokémon Y which is possible because it is portable.
But by the same token if you take the game home and you connect it through the internet, then you can do the same thing with other people who are also playing online at the same time. You can trade and battle with people you’ve not met before. We think this mode of play is bets possible with the Nintendo 3DS. If, for example, the Wii U were to be portable in its own right we’d probably reconsider. But for the moment we think the 3DS is the best device for Pokémon RPGs.”