Arkadiĭ Strugat͡skiĭ

When his ship crashes on an unknown planet, a young man from Earth finds himself stranded in a polluted world whose inhabitants are controlled by powerful doses of radiation.

Inside a mysterious realm called the Zone there is the Room, a place that will grant you your innermost desire. Stalker, a man that knows how to pass the deadly secrets of the Zone, escorts a group of people to the Room.