I don’t know if this game has a name or anything, but most places I go to just call it the Falling Sand Game. What it is is just a game where different types of a sand-like substance fall from the sky and you can draw other types of materials on the playfield to interact with it.
There’s really not any point to the game, other than to goof around and see how the stuff interacts with each other. Water causes the Plant material to grow, for instance.
Just fooling around with this game is oddly therapeutic. Even if you don’t have a goal in mind, it’s pretty relaxing to just goof around with. Don’t believe me? Go check it out!