# Sandbox.ParticleEffect.SimulationSpace

- Kind: enum
- Assembly: `Sandbox.Engine`
- Modifiers: sealed

## Fields

- [`Local`](/api/Sandbox.ParticleEffect.SimulationSpace/Local): Forces are applied in local space, relative to the emitter's position and rotation.
- [`World`](/api/Sandbox.ParticleEffect.SimulationSpace/World): Forces are applied in world space, independent of the emitter's position or rotation.