[sjh]

Reminds me of 3D Hidden Picture, a DSi Ware puzzle game, available in Japan: http://www.youtube.com/watch?v=h5QSclrIdlE

Supposedly this uses the DSi's camera the track the motion of the device and adjust the displayed image to give it depth.

[Luc]

Everything's relative, but since the camera is stuck to the device I think it makes sense to say it tracks the location of the player's eyes...