Nintendo's first mobile app available in U.S. this week

Nintendo will launch its first app for mobile devices in the U.S. on March 31, the video game maker announced Tuesday. Interestingly, Nintendo's first app, called Miitomo, isn't a game but a social experience where users interact with each other using Mii avatars, which were introduced with the Nintendo Wii video game console. Users start by downloading the app and creating their Mii with an avatar editor, or using a picture of themselves taken with their smartphone camera. Users can also import their Mii from the Wii or Nintendo 3DS through a QR code. Users then link the app to their Facebook or Twitter accounts to add friends, then answer a series of questions to help spur conversations.