The writer cites being inspired by a legion of urban legends and websites like 'Creepypasta', as well as paranormal games like 'The Elevator Game'.
Rumorsa is a combination of the words rumor and remorse.
The film has many winks and nods to past and future films from Archico Productions including, a shot where we can see posters of sIcKoS: The Very First Ones as well as Baron Von Laugho's Halloween Spook-A-Thon! Also on top of the main character's refrigerator is a box of Murder Os cereal from BVLHS. Finally on the Rumorsa website, when Carter scrolls through several mythological creatures and urban legends such as Mothman, Loch Ness, Slender Man and The Elevator Game can be seen as well as Baron Von Laugho and The Orangutan from Archico's upcoming feature The Orangutan.
The ending of the film originally was going to feature Carter being taken by The Filmer and forced to spend an eternity in a grave watching the decapitated deer footage again and again and again in a daze. This is was not filmed due to time. Also originally, it was filmed that Mike finds Carter missing and the message written on his computer. At the last minute, the director thought it made more sense for the Taylor character to do this.
There was an alternate ending written in which Carter is found decapitated in his bedroom. This was not filmed due to time and budget.