Within

Within is a psychological-themed third-person adventure video game developed and published by Apogee as an exclusive for the PlayStation 4. It was unveiled on June 12, 2014 during a joint press conference held by Sony Computer Entertainment and Apogee. The game was released worldwide on July 1, 2015.

Gameplay
Within plays in a third-person format with major stealth, puzzle, and platforming elements. The main purpose of the game is to overcome obstacles and other puzzles that will require extensive logical prowess in order to proceed. The player will also sometimes be forced to combat enemies that take the form of grotesque monsters called Nadirs which are created by Andrew's antagonistic personalities. Certain Nadirs cannot be confronted directly and must instead be dispatched in a completely different way or avoided altogther.

Story
The game's main plot is centered on a device known as the Mentis, which allows people to enter the realms of their own minds. Here, the Mentis creates a virtual reality based on the mental composition of the user. Eventually, the device's capabilities as a psychological therapeutic are heralded by modern scientists and media, and the Mentis is later marketed as a medical tool. The story follows the experiences of a man by the name of Andrew Zellner, who has been diagnosed with multiple personality disorder and is later placed into a Mentis, where he is forced to confront his inner demons and eventually find a meridian: a physical form of great significance to the patient in question, which is purportedly the key to their mental recovery. Andrew's meridian in this case is unknown, leading him to traverse puzzles created by the many different personalities that exist within his head all the while discovering truths about himself as well as the Mentis.

Characters

 * Andrew Zellner: The main character.
 * Judith: A female artificial intelligence that serves as a guide for Andrew.

Themes
Within contains a fair amount of themes dealing with the mind. The game also ponders various psychological theories.