Erevos come to killers to give them a offer (if they come to his realm and in return they get a endless amount of souls to play with) they are free to leave when ever they want no strings attached. Survivers are not as lucky Erevos targeds the one who have experins trama, torment, fear, and hopelessness them he takes them to his realm to be tormented by the killer and the maps are twisted memerys of the survivers. Erevos feeds off of fear, trama, torment, and hopelessness.