At Nintendo's digital event, Nintendo of America president Reggie Fils-Aime formally introduced Nintendo's previously announced NFC figurines. They're called "amiibo," and they'll debut with Smash Bros for Wii U this fall.
In Smash Bros, the amiibo figure will retain your data and transfer to other copies of the game, similar to Skylanders. In Smash Bros, the figure will take over for you and fight automatically, and each time you use them they will level up and gain access to new abilities.
Fils-Aime said the amiibo figures will work with a variety of other games. In a post-show event, Nintendo announced it is planned to work with Mario Kart 8, Captain Toad: Treasure Tracker, Mario Party 10, and Yoshi's Wooly World.