This improv game is in the following improv game categories:
Dead players scream when they are killed, keep their eyes closed and stand still. When the retriever bumps into someone that does not move (a dead body) she can revive the dead by rubbing them with the towel.
When the retriever gets killed, she screams and stops moving. When another living person bumps into the retriever (recognized by the scarf), the retriever is revived, and the one that revived the retriever becomes the new retriever.
Play till everyone is dead or bored.