Short answers, pulled from the story.
The P.T. teaser was released on the 12th of August 2014. This digital artifact appeared in the PlayStation Store and became a playable experience that trapped players in a looping hallway.
Hideo Kojima and Guillermo del Toro directed the cancelled game Silent Hills. Norman Reedus served as the face of the protagonist for the project.
Guillermo del Toro announced the cancellation of Silent Hills on the 26th of April 2015. Konami subsequently pulled P.T. from the PlayStation Store on the 29th of April 2015.
The petition on Change.org gathered 194,279 signatures demanding that Konami continue the project. The company remained unmoved and chose to focus on other franchises instead.
Horror manga artist Junji Ito was set to work on Silent Hills to add a layer of visceral body horror. Guillermo del Toro revealed this collaboration on Twitter after the project was cancelled.