Does not disable achievements
This mod adds a rare chance for a Herobrine sighting.
All he does is watch you from a distance and disappear when you get close, and he plays a cave noise if he spawns.
That's it. No summoning totem, no structures, no random attacks. I wanted a lightweight mod that won't mess with my world, so I made this. This mod was made a few years ago, I am just now deciding to publish it.
Credits to c0rrupted_Infern0 for his Creepypasta Herobrine mod which was the initial inspiration for this.

