The Fog Stalkers

Looking for an add-on that will bring the scariest creatures to your Minecraft world? Then consider the The Fog Stalkers mod. Only three monsters will appear, but that's enough to provide a unique survival experience that will haunt your nightmares more than once. Day Stalker appears only during the day and only on the surface. Night Stalker appears only at night and only on the surface. Cave Stalker appears only in caves. It is the strongest enemy. Don't forget to enable Experimental options in the map settings.