These games offer the best of the genre, be it as humanoid cats or as ruthless dictators. Unlike the text-based multi-user dungeons from which MMOs evolved, today's MMOs are incredibly sophisticated. The underlying idea behind all these big numbers is a simple one: anyone, anywhere, can become anything in this virtual world (and grind out some loot along the way). World of Warcraft, for example, has players who have cumulatively spent more time on Azeroth than the human species has existed on this planet for 6 million years. You can find plenty of both free MMORPG games and paid MMORPG's. The MMO industry generates 10 billion dollars a year and reaches audiences much larger than that.
MMOs are among the most ambitious and popular PC games.
