Superliminal

The player heads to the Pierce Institute to get some therapy from its new SomnaSculpt technology which is designed to provide dream therapy to patients. They are put to sleep and placed in a testing environment constructed in their dreamworld, where they are capable of performing reality bending feats such as changing the size of items based on perspective or instantly creating copies of them. However, the player fails to wake up at their appointed time, ending up back inside the dreamworld. A Pierce Institute doctor, Dr. Glenn Pierce, communicates to the player through radios, explaining that they have completely lost track of the player, and that the player is likely traveling through successive dream layers. Meanwhile, the AI administering the dream therapy advises the player to initiate an "Explosive Mental Overload" in order to trigger the "Emergency Exit Protocol" and escape the dreamworld.
Eventually, the player travels through enough dream layers to trigger the Emergency Exit Protocol, but it fails due to an unknown error. The AI concludes that SomnaSculpt therapy failed to eliminate the player's negative emotions; hence they cannot leave the dreamworld. The AI then advises the player to find their own way out. With the player now trapped, the dreamworld becomes increasingly surreal. Eventually, the player creates a dream paradox and ends up in the realm of Whitespace where all sense of reality is lost.
The player is eventually able to navigate their way out of Whitespace, and Dr. Pierce congratulates them, revealing that the entire journey occurred just as planned, as it was a way to make the player see things from every different perspective, which will help them grow as a person. Dr. Pierce also advises that even though the therapy occurred in the dreamworld, everything the player learned is as real as they want it to be. The player then returns to the room they began in, where Dr. Pierce tells them to wake up.