The Origins of Coma
A technological menace has infested the universe. Mechanical spores, connected by an advanced neural network, travel from planet to planet absorbing and destroying crystal resources with their fog of parasitic nanoparticles. A single galaxy remains resilient, the home of a lone defender manifested from the cosmic plasma. Coma, a sentient comet guarded and fueled by the life force of the galaxy, must travel out across the branching arms of the spiral, eliminating the spores and restoring the crystals without being destroyed the toxic fog.
Specialized spores hone in on the galaxy from all corners of the universe, infecting each arm with new challenges that require unique strategies to overcome. Arms can be chosen in any order, but get progressively more difficult as Coma nears the edges of the galaxy and approaches the fringe of technology's domain. If the entirety of the galaxy is freed from spores, Comet can return to the center of the universe, and face the greatest technological nemesis in existence.