---
title: particleAlphaRange
framework: spritekit
role: symbol
role_heading: Instance Property
path: spritekit/skemitternode/particlealpharange
---

# particleAlphaRange

The range of allowed random values for a particle’s starting alpha value.

## Declaration

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

## Discussion

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

## See Also

### Blending Particles with the Framebuffer

- [particleBlendMode](spritekit/skemitternode/particleblendmode.md)
- [particleAlphaSequence](spritekit/skemitternode/particlealphasequence.md)
- [particleAlpha](spritekit/skemitternode/particlealpha.md)
- [particleAlphaSpeed](spritekit/skemitternode/particlealphaspeed.md)