This script is really scary. It can really freak the hell out of your players. My only criticism is the preparation. If you wish for a game you can begin playing right the way, this is not one of them.
There's a lot of props you have to prepare to make this game work: stereo boombox, phone, fake blood, fake gore/body parts, portable tape recorder, some food stuff. You need a place which you can get messy. Body parts, food, and fake blood will scatter all over your floor and your persons. You need someone with sound editing skill to make various convincing sound effects, like chaos police shoot out and men slaughter, and abominable monstrous sounds. You need a couple of strong stagehands to help drag your players around by force, and convincingly play various roles, and make monster effects work.
This takes a lot of work. If you have a trope devoted to this scale of production, then go for it. It'll be an unforgettable experience for the players. If you don't have the means to produce this, it's still a great read anyway.
This game is a stand alone, it doesn't require the use of any game system. The players are blindfolded to simulate blindness. They can't read their character sheet (thought the sheets are provided anyway). Things will happen to players according to timing on the script and GM's judgement. There's no need for any task resolution. Hence the game is free-form.
I'd give this 5 stars, but it requires so much preparation, I don't think I'll ever run it.