It NEEDS a Wii Sports Type game, something that will grab the attention, is easy to play and people can do it together.
So far we have only really seen single player games using this device. (ignoring the painting stensil)
Is that it's limitation?
How many people can it track?
Price point is also really important. it will pretty interesting to see if it gets bundled with new Xboxes.
Playing : PC AOE, DiRT 2, Runes of Magic, Wings of Prey & Planetside 2
Wii U : Nintendoland, Super Mario U & Fifa 2013 demo
DS : Guitar Hero : On Tour
Formerly unknown as Vengi