TheWatcher

A faceless, pitch-black figure called the Watcher appears at the edge of view and disappears when looked at directly. Sounds are part of the design: the player hears mining, opening chests and footsteps that replay a few seconds later from somewhere else. Doors can shut or swing open without anyone touching them, torches that were placed can disappear, and cows, pigs and sheep close by freeze in place while quietly following the player's footsteps.

A concealed fear meter is what powers all of it, rising as the player spends time in the dark, holding still or remaining alone. The higher the fear, the more the world turns against the player. Nothing in the mod is violent and nothing leaves proof behind, so the effects are meant to be doubted rather than fought. The mod needs Cloth Config API. It runs on client and server, so the server and every player need it, and it is published for Fabric, Forge and NeoForge for 1.20.1 and 1.21.1, under All rights reserved and not open source. Public links exist for the source code and the issue tracker.