Konami's Silent Hill: The Short Message is the company's first real attempt to return to the series since Hideo Kojima's P.T. experiment (ignoring, as everyone should, Silent Hill: Ascension), and serves as an interesting parallel to what came before. P.T. was originally billed as a demo for an unnamed game from 7780s Studio, a fictional game company that never existed, and quietly appeared on the PlayStation Store with little fanfare. It wasn't until players had completed P.T. that they even learned they had just played part of a new Silent Hill game.

https://screenrant.com/silent-hill-short-message-review-ps5/