Amid all the announcements at Sony's pre-Gamescom press conference today, one stood out as particularly baffling: the brief mention of an immediately downloadable PS4 "playable teaser" for a horror game simply being called P.T, from unknown studio 7780s. The mystery has now been solved, with P.T. revealed as a stealth announcement for a new Silent Hill game from Metal Gear Solid creator Hideo Kojima.

After wandering through a dark, creepy house lit primarily by a flashlight, the P.T. demo culminates with a cut scene showing a rain-soaked street. The name Hideo Kojima pops up alongside noted film director Guillermo Del Toro as the camera pans up to show a character modeled after The Walking Dead star Norman Reedus.

The game name Silent Hills then appears against a white background, followed by a disclaimer warning "This game is a teaser. It has no direct relation to the main title."

Kojima teased his interest in working on the popular Silent Hill survival horror franchise nearly a year ago at a Eurogamer Expo panel, where he recalled simply, "the president of Konami rung me up and said he'd like me to make the next Silent Hill." At the time, he said he'd like to lend the technology for the high-powered Fox Engine to the project.

Earlier this year, in a Twitch Q&A, he again cited Silent Hill as a franchise he'd like to work on. "Hopefully sometime in the future I am able to work on this," he said. In another bit of stealth teasing, Kojima has also been tweeting pictures of himself with Reedus over the past year or so.

Since its start in 1999 on the original PlayStation, Konami has published nine main games in the Silent Hill series. While the first three games in the series were critically lauded and are frequently cited as sterling examples of the survival horror genre, more recent games in the series have not had as warm a reception: 2012's Silent Hill: Downpour got negative to mediocre reviews that cited technical and plot issues.