The 3DS has a couple of small StreetPass-based games built into the operating system

StreetPass is the feature in the Nintendo 3DS that allows multiple devices to connect silently with each other when in a certain range and exchange all sorts of data, such as the Mii’s of fellow gamers, or perhaps ghost data in Mario Kart. But wait, there’s more! Satoru Iwata has confirmed that the Nintendo 3DS features a couple of small StreetPass-based games within the operating system itself. He reveals that one of these games is called “StreetPass Quest” but doesn’t shovel out any other details. He also admits that:

“Many of them even go back and forth in the building, without any business purpose, to collect as many Mii characters as possible or secretly check their Nintendo 3DS during meetings. In fact, I am also one of them.”