"Grey Goo boasts what is probably the most interesting clash of asymmetric armies since StarCraft 2. A major part of that is down to the titular Goo itself: it begins each match as a lone, amoeba-like blob of nanomachine particles and, as it begins oozing around the map collecting resources, it can spawn off smaller blobs that can transform into combat units or it can split itself and create another “Mother Goo” blob. The Goo faction never holds territory the way other factions can. It has no base or base defense. It can ignore impassable terrain, pouring down cliff-faces and crawling over ravines. I’ve never played anything in an RTS quite like it."