In an abandoned place from long ago, you have to guard the place until 6AM. Guard yourself from the killer numberblocks 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 numberblocks in your view ouside the camera, put on the mask immediately.
NOTE: MINI-ROBOT ONE DOSENT OOF YOU