To this day, my favourite 3DS design is the Animal Crossing one. That place in my heart is being challenged today, however, by a new Animal Crossing 3DS design.
https://kotaku.com/japan-gets-custom-mario-animal-crossing-handhelds-and-5948446
This one’s a 3DS XL, and is being released to tie-in with the upcoming Animal Crossing: Happy Home Designer, a version of the game which lets you design your village’s homes (and has card-based Amiibo).
