Features:
Everything is commented, and the script arguments give you a wide range of control.
View all assets by this author: https://marketplace.yoyogames.com/publishers/218/ground-effect-games
Click "More Info" to download a demo.
End User Licence Agreement (EULA).
Fixed bugs with surface. Greatly improved performance impact of particles by using default cloud shape instead of custom sprite. Custom sprites are still included in case someone wants to use them.