In an abandoned place from long ago, you have to guard the place until 6AM. Guard yourself from 5 killer animatronics on the loose, and survive until the said time. You should know how to play it. (You've played FNAF) If not, here's how. Click on the "open camera" and "use the mask" buttons to use the camera and mask respectively, which can come in handy. If you see any animatronics in your view ouside the camera, put on the mask immediately.