The Beast Inside is a survival horror game that immerses the gamer in a story filled with mysteries, madness and character tragedies. The player takes control of two main characters who share a common and terrifying heritage. In a three-dimensional journey you will have to fight enemies, overcome otherworldly forces and solve logical problems in an atmosphere of full-fledged horror. The environment is presented in a dark form with frightening sounds and dynamic events.

The plot begins in 1979, when Adam moves with his wife Emma to a country house from Boston. The main character works for the CIA as a cryptanalyst, and in a new place he will have to carry out assignments from work. Curators say that in a place remote from society he will be safe, and opponents will not be able to identify him. From there, he must carry out secret hacks and actions, deciphering the military code that can determine the success of the operation.

As soon as the central character settles down in the house with his wife, paranormal and strange things begin to happen at night. Otherworldly forces pull Adam into a mystery connected with the former owner of this mansion. In the future, he will have to unravel the secret of the previous inhabitants and fight new enemies and monsters. The user will control two characters living in different eras, determining the development of history with their own choices.