Addon: Don't Say Hello
Author: ElNoche14
Unpredictable encounters
The creature can remain at a distance, appear without warning or enter a fast RUSH phase. Darkness, particle messages and random events interrupt otherwise normal survival, while standing still for too long may attract unwanted attention.
Do not greet it

Writing Hello in chat can provoke a direct reaction. The mechanic turns an ordinary multiplayer message into part of the threat and gives the addon its central rule.
Settings menu
The in-game menu controls stalking frequency, creature speed, waiting time, darkness duration, automatic events and RUSH attacks. The sequence can also be reset when the world owner wants to begin again.
Multiplayer
The horror system works in shared worlds. The host or an operator controls the common settings, while every participant can become part of a chase or random event.
How to install the add-on
Download the .mcaddon or .mcpack file, open it with Minecraft and wait for the import to finish. Then enable the resource and behavior packs in the world settings. If the add-on requires experiments, turn them on before launching the world.