I agree with Dyack and I'd go further : I don't see any future in real games for any motion control tech, whether it's from Nintendo, Sony or MS.
If I was wrong, you would already see great hardcore games using either Nintendo motion control or Sony eyetoy. There's none and it says a lot about those techs.
Fact is people just don't want to "move" in front of their TVs, they just want to sit and play quietly.
Plus, any motion control tech lacks both precision and user feedback, two very important things brought by controllers.







