I think they're the farm leagues for dedicated gaming systems. (canadianbusiness.com)
That is also as I have understood it — but Justin writes «Namely, the Animal Crossing mobile game will be designed to be connected with the EXISTING world of Animal Crossing on dedicated gaming systems» (capital letters added). (animalcrossingworld.com)
They're doing more to add to the interest in dedicated gaming systems than they are detracting from it. (canadianbusiness.com)