It was called "Stalker." and it was set after some mysterious event happened when the chernobyl facillity was blowen up. and a war between a timezone. Ukraine soldiers were transported to stop the mutants being formed by the radiation. incident as well as russians. it wouldn't be long, till mutants had wiped out ukraine's and russia's land. this caused russia and ukraine. to make factions in differnet groups. some russians were there as well. bandits were small russian groups including loners were small ukraine groups. You wouldn't be alone, though, because somehow, some things, maybe the things responsible for the apocalypse in the first place, like the chernobyl facillity. or maybe just their pets. would be out there. They wouldn't need guns only claws. but some carried weapons with bad aim, and they'd be deadly predators. You could only be aware of them by spotting them, and they'd be these haunting, stalking creatures like bloodsuckers, that could get to you anytime and anywhere outside.