$16 for a *very* non-performant material? If this was intended for use in high-detail scenes, not meant for gameplay, one would generally just use a flipbook animation, or looping HD video texture (both of which are higher quality and available for free all over). I love options, but c'mon, that's pretty steep. $5, maybe. And you can loop in materials, using custom HLSL nodes. Also, there are better ways of doing this, all around. Somewhere on the forums, Ryan Brucks (of Epic fame) himself touched on this. I've personally been working on a cool water material (not "material blueprint", thankyouverymuch) and utility functions, and am close to the quality achieved here, sitting at ~180 instructions with everything "turned on". The kicker? It's pure procedural. No textures are needed. So this is cool, no doubt about that. In my humble opinion though, it's not "good". It doesn't run fast, and it's more complicated than it needs to be.
Lee is right - you can use a gradient effect when you vertex paint in your chosen 3d modelling platform (I've done it in max), meaning the wind effect shifts from nothing to maximum along the length of the leaf/branch/whatever.
I'm fairly certain you can vertex paint the bottoms of the foliage and control the movement using vertex colors along with the wind node. I did this in an earlier project and was able to create a scene with grass that moved less and less as it went down until stationary. I created the grass and painted the vertexes black to red (bottom to top) in Maya.
Indie developers Deema35 is currently building a small indie game with the help of Unreal Engine 4. What’s interesting about this project is that it was developed in 3 month mostly with the assets from Unreal Marketplace. The whole thing looks incredibly detailed and smooth.
There are a couple of interesting game mechanics as well. For one thing you control the car with the help of the mouse. It’s sort of like a gyroscope control, but with another device. Not the best solution, but at least it’s original. The other thing is that the racing can change into a off-road truck in a matter of seconds. This brings a lot of variety to the exploration of the environment, which looks awesome by the way.
The sad thing that there’s not much gameplay to see in Desert Car. There are no competitors, no coins to gather or races to take part in. Just a basic prototype. Let’s hope the developer will try to take this project to the end and build a fuller game out of it.