Storm is a slim and powerful 3d vfx simulation software, allowing you to quickly setup & sim particle materials with different properties, like sand and snow. It has been used in feature films and series like "Game Of Thrones" and "XMen: Dark Phoenix" and more!
The license is perpetual and won't expire - you pay only once and can use Storm as long as you want. Free updates are included until version 1.0.
...more on www.storm-vfx.com