---
title: particleLifetimeRange
framework: spritekit
role: symbol
role_heading: Instance Property
path: spritekit/skemitternode/particlelifetimerange
---

# particleLifetimeRange

The range of allowed random values for a particle’s lifetime.

## Declaration

```swift
var particleLifetimeRange: CGFloat { get set }
```

## Discussion

Discussion The default value is 0.0. If non-zero, the lifetime of each particle is randomly determined and may vary by plus or minus half of the range value.

## See Also

### Controlling Particle Lifetime

- [particleLifetime](spritekit/skemitternode/particlelifetime.md)