# Mob Stacking

To optimize server performance and enhance gameplay, Theatria uses a mob stacking plugin in the **Mining World**. This system helps reduce lag by combining multiple mobs of the same type into a single "stacked" entity.

## How Mob Stacking Works

* When mobs spawn in the Mining World, they automatically stack together if they are of the same type and close to each other.
* The stack is represented as a single mob with a number displayed above it, indicating how many mobs are in that stack.
* For example, if the number "10" appears above a mob, it means the stack contains 10 mobs.

## Interacting with Stacked Mobs

* **Killing a stacked mob:** When you kill one mob in the stack, the number decreases by one, and the stack remains until all mobs are defeated.
* **Using spawners:** If you place a spawner in the Mining World, mobs spawned from it will also stack. This ensures efficient farming while maintaining server performance.

## Benefits of Mob Stacking

* **Improved server performance:** By reducing the number of individual mobs, the plugin helps minimize lag, especially in areas with a high mob density.
* **Streamlined gameplay:** Players can still gather resources and XP efficiently without being overwhelmed by large numbers of individual mobs.

***

### Related articles

* [Spawners](https://docs.playtheatria.com/minecraft/gameplay-features/spawners)
* [Custom Mob Rules](https://github.com/JL-III/Theatria/blob/master/docs/gameplay-features/mob-rules.md)