Variety FX is an exstensive set of environmental particle effects that can add incredible atmosphere to your project.
Webplayer | WebGL | APK | Forum Thread
Featuring a total of 209 prefabs, each containing 1 to 4 particle systems. Most particles are optimized to reduce drawcalls by using animation spritesheets. Texture sizes range from 64x64 to 1024x1024, with an average of about 512x512.