# subSystemList

> An array of sub-systems, each of which is also a PlayerLoopSystem, which run as part of this system in the Player loop.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.LowLevel](/engine/6000.7/script-reference/unityengine/lowlevel.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public PlayerLoopSystem[] subSystemList
```