A Gap in The Door is a WAD that attempts to re-create the lost demo of Silent Hills using the Doom engine. Based on what I’ve seen, it’s fairly accurate, though I can’t compare it to the source material since I wasn’t into the Silent Hill series at the time of PT‘s release. Sadly, I was unable to find a link to the post of the original WAD to go along with the video, which means that Konami’s lawyers have likely gotten to yet another fan creation.