The Schizophrenia

Its central threat is a Stalker, a dark humanoid entity that watches from behind cover and spawns 25–40 blocks away. It will not stand in the open. A glance returned by the Stalker triggers a shriek and a fast charge, after which it disappears from view, and as the player's habits become known to it, its hunting area drifts nearer to their usual spots.

Much of the horror is built on perception. Distorted faces appear when blocks vanish after being looked at directly, the camera shakes and flashes with chromatic aberration, low health desaturates the screen into pixelated static, and fake TNT hisses while footsteps mirror the player's own distant explosions. Standard hostile mob spawning is suppressed, so the world feels unnervingly empty.

The mod is published for Forge only, with the single game version 1.21.1. It runs on client and server, so the server and every player need it, and it is released under All rights reserved and is not open source.