Clumsy Ninja, a toy-like app that lets you interact with a ninja, was shown off on the redesigned iPod touch at today's Apple event.
The game features a black-clad ninja that is "fully aware of his environment," and will respond to input from the player. During the on-stage demo, the player tickled and chased after the ninja; it sounds similar to Nintendogs or Lionhead's "Project Milo" tech demo for Kinect.
The titular ninja also learns as you play with it. According to the demo, Clumsy Ninja is based partly on research done at Oxford University, so it's probably pretty smart already.
The 5th-generation iPod touch itself will be available in October.