Like watching grass grow
Okay, I mostly wanted to write this story because grass behavior is stereotypically one of the dullest things out there, right next to watching paint dry. But to be honest, the tech demo above is actually pretty cool.
I can imagine a game with a focus on tracking, using the flattened foliage as a guide. Think Metal Gear Solid 3: Snake Eater‘s fight against The End, but with another, more realistic means of finding him. Or perhaps something like Miasmata, where the orienteering gameplay is supplemented by this grass-squashing betraying the proximity of that weird cat demon. Could be interesting, right?