Zombie Hospital puts the Directors Cut Survivor Horror RPG on full display with an original zombie story set in a diabolical insane asylum. You have to love any RPG product that has its own parental advisory disclaimer.
This is a vicious adventure. There is disembowelment, rape and mass murder, all before the adventure even starts. The players are outsiders trapped on the inside who must escape as a zombie onslaught begins.
The adventure has a ton of material for handouts and is told in a way that makes it easy to run sandbox style. With the players only go being escape, there is a lot of room and a lot of hooks to flesh into an ongoing story.