According to Chahi, Project Dust is a God game based on manipulating nature. " The foundation of Project Dust is a simulation. It's like playing 'sandcastle' on the beach, except you have more material to use, like lava." Lava, he reminded us, isn't purely a destructive force -- it can also be used to shape the land and even create areas of land.
Interaction with your tribe of people is done through manipulation of the land, which mainly involves picking up materials and moving them around. The Ubisoft rep with Chahi explained that when you pick up something like water, it forms a free-floating sphere that the people can see and react to -- and they don't understand it. Right now, he said, the in-world significance of the levitating material is a mystery even to Ubisoft.