Put on your Google Cardboard viewer and walk around a multi level maze. Find the beacons to take the elevator to the next level. You can find some viewers here: http://g.co/cardboard
Tap the trigger on your viewer to start walking. To turn, simply look where you want to go. Tap again to stop, so you can look up and around. Then tap again to resume walking.
When you want to start again and make a new maze, simply tilt your viewer.
The app combined with the viewer simulates moving around in a 3D / virtual reality environment. This can sometimes cause nausea and other symptoms. Be sure to read the important safety tips at the beginning of the app.
Supported devices: iPhone 6 Plus, iPhone 6, iPhone 5s, iPhone 5, iPhone 5c.