Super Mario Galaxy/WMG

Dusty Dune Galaxy is the site of an Apocalypse How.
Like Atlantis, a prosperous civilization once thrived on that planet and its assorted mini-moons. They built pyramids, monuments, and even orbiting space-temples with their own gravity. Then, like Atlantis, some sort of disaster struck and and all the earth in that region started turning to quicksand, driving the inhabitants to extinction. By the time Mario visits, only a few scattered ruins and barely-functional automated defense systems are left as a testament to the builders' great achievements.