If you can't make out what the wall drawings say it means Undyne and Mettaton are active. For Undyne if you hear her it means shes on a random cam and you have to shock her. For Mettaton if you hear him and he has no dress shock him and if he has a dress don't shock him.
The main mechanic (camera and office) is from the game Five nights At Freddys ,made by Scott Cawthon. The characters are horror versions of the Characters from the game Undertale ,made by Toby Fox. Anything else (accept the sounds) is made by me.