Retro in a good way. Modern-looking. And there you have Grey Goo, a back-to-the-future real-time strategy game from the Westwood veterans at Petroglyph. This is an impressive if deeply traditional game that is both a blast to play and a walk down memory lane for old timers who played Dune II and the first Command & Conquer in a time of parachute pants and high-waisted women’s jeans. Like every good homage, though, Grey Goo does not feel old or derivative, even while it blatantly draws on the influences of its antique forebears and current genre giants like StarCraft II. Shrewd map and scenario design, beautiful visuals, aggressive artificial intelligence, and more combine to make for a very challenging experience, no matter if you’re playing solo or multiplayer.