Ghostwire is a collection- and adventure game, where you use your Nintendo DSi to communicate with ghosts. Your DSi device is used as a portal to the astral plane and helps you find and collect ghosts that exist all around you.
In your quest you use real tools, such as the built-in camera and microphone, as well as abstract ones like an “EMF Tuner” for tracking down the ghosts. Once you find the spirits, you document them and find out why they haunt our world. Ultimately, you help them to find peace.