Some of these are duplicates, but I thought I'd start categorizing them. See the post title.
Anarchy-Online.comA 3D game set in the far future; it features multiple expansions, and is a winner of many awards.
ConquerOnline.comAn MMORPG mixing elements of kung fu with magic.
Cronous.comA 3D fantasy MMORPG that supports zoom-in and zoom-out graphics effects.
Some of these are duplicates, but I thought I'd start categorizing them, see post title.
DarkEden.comWho can resist playing as one of the creatures of the night, a vampire.
DeicideA3D fantasy game with a skill system divided in to close, ranged, white magic and dark magic. As with most “free” games, it’s free until you try to get the really good equipment.
Dofus.comA manga inspired, strategy based game with over 3.5 million players. Free for basic play, costs for extra content.
Drift CityGet ready to jump in your car and drift race around the city. Has a very anime inspired vibe to the artwork.
DungeonRunners.comChoose from fighters, mages, or rangers, and explore a fantasy game where some dungeons can take as little as 15-minutes if you’re strained for time.
Fishing ChampProving that any thing can be turned in to an MMORPG, now you can wile away the hours fishing for virtual fish.
FlyffShort for “Fly For Fun”, Flyff is a highly rated, and popular MMORPG set in a fantasy environment.
HeroSet in a land filled with ancient Chinese myths, it’s a martial arts take on a MMORPG.
Heroes in the SkyTakes to the skies of the World War II Pacific theater, and over the skies of Normandy.
KalOnlineA MMORPG set in a medieval world with a large amount of advancements.
KnightOnlineWorld.comA 3D medieval game that heavily encourages partying up with other players.
Martial HeroesA 3D game set in the world of martial arts fantasy fighting.
MythWarOnline.comGoes for the classic 2D, painted backgrounds feel.
Ran OnlineSet in a fantasy version of Asia where somef orm of evil has come from the sky; it’s up to you to figure out what the hell is going on.
RappelzA fantasy game set in a 3D world where you can party up and kill monsters.
RF-OnlineGame.comSet in a far off galaxy, it’s an immersive sci-fi game with three warring factions.
Risk Your Life Part 2 Another 3D fantasy environment.
Scions Of FateA 3D game based on a comic of the same name.
SecondLife.com With appearances on <em>CSI: New York</em> and the American version of <em>The Office</em>, this game gets bigger by the day. While the game can be free to play, don’t be surprised when you start spending tons of money to buy yourself an island.
Sherwood DungeonFrom
MaidMarian.com; no registration is needed, just enter a name and hit enter.
Shot OnlineHave you ever woken up in the middle of the night and wish you could go golfing? Well, now you can! Yes, it is a golfing MMORPG.
SilkRoadOnline.netA fantasy game set around the real life Silk Road trading route.
Space CowboyMixing traditional MMORPG with FPS style action, you’re a fighter pilot on a distant planet. The game is free to play… until you want new parts for your fighter.
Tatsumaki: Land At WarSet in 16th century Japan, before the introduction of firearms, you can play as part of the Shogunate or the rebel factions. Currently in beta, they are looking for more testers.
TricksterOnline.com Cute characters based on animals, fighting isn’t necessary, and free to play until you start buying yourself a home and more.
TurfBattles.comA 3D fantasy MMORPG that’s free at the beginning, and you have to pay to advance.
Upshift StrikeRacerJump in your car, race around Triumph City… shoot up some other drivers. Free to play, some upgrades can be purchased with your reputation.
VoyageCenturyOnline.comA nautical based MMORPG where everyone captains their own ship.
WarRock.netFree FPS style fighting across land, sea, and air. Free to play, upgraded weapons is where you can start spending the big bucks.