Long-time readers of this site know that I love a good MMORPG. Yet when THQ announced last week that Warhammer 40,000: Dark Millennium Online would “shift” from a massively multiplayer online roleplaying game to a single-player game with a multiplayer component, I won’t deny that I raised an eyebrow at the possibilities that just opened up. Games like EverQuest and World of Warcraft long ago laid the framework for what works in that genre, and all too frequently innovation is trampled under fear of risk and failure in such expensive projects. But with a single-player game, THQ has the opportunity to make the revamped Dark Millennium something riskier. Something with smoother, more responsive combat and player movement. Something that conveys a story and the sense of having altered the world, without griefers ruining the atmosphere, and an actual ending. In hindsight, perhaps other MMO developers should have taken the same step. Here are five notable MMOs that might’ve been better off as primarily single-player games.