Miniature (tabletop) game set in the Legions of Steel universe, using the same miniatures From the back cover: Planetstorm is the tactical, science fiction combat game set in the not-so-distant future. The 22nd century is one of advancement and discovery for Earth. Contact by extra-terrestrials, global unification and technological advancement are all hallmarks of this age. These events, however, have a single cause: the galactic invasion by The Machines: The Legions of Steel.