ChatChat is an online multiplayer game by Terry Cavanagh, creator of VVVVVV. It's a highly intricate simulation involving deep-level behavioral algorithms and calculus-based — wait, no it isn't! It's about being a kitty! The wildest dream of every internet human has come true in this simple little game, giving you full permission to nap, purr, meow, and catch mice to your furry heart's content.

London is Fallen. It has something to do with the Traitor Empress... or perhaps Hell... or perhaps... No, too dangerous to even speculate. You've left the Surface and now make your home there, in the Neath. Why did you do so? Write your own answers in this fascinating multiplayer roleplaying browser game from Fail Better Games.

We've been in charge of running a country during a national crisis Pandemic: American Swine Flu. We've led the nation to world conquest Mastermind: World Conqueror. But have you ever wondered what goes on during the downtime? In-between the diseases and the hostile takeovers, everyday decisions still need to be made. NationStates is a massively multiplayer online game by author Max Barry that puts you in charge of your own fledgling nation to create and shape how you see fit.

Free Realms is one of the most-accessible MMOs ever made, targeted at everyone from young children to adults. It's free to play and features a unique mini-game progression system, aimed at tearing down the usual tediousness of modern MMOs.

PMOG aims to capture the social dynamic of an MMORPG while remaining accessible to your everyday Joe Gamer. However, it wouldn't be much fun if you could just up and create a top-level character – there has to be some sort of dirty work, some progression by which you earn your stripes. This is the part of the game that usually keeps MMORPGs from staying casual. PMOG solves this problem by tying the leveling process directly to your web surfing.

Albatross18: Realms of Pangya is a free downloadable, massively multiplayer online (MMO) golfing game for the PC. I know what you're thinking... MMO golf?! Well, its not so hard to imagine, is it?

"Gorgeous" is the only word to describe the award-winning Dofus, a feast of sight and sound in the form of a Flash-based MMORPG created by the folks at Ankama Games. The art and music of Dofus follow in the finest traditions of anime, making the game something of a cross between WoW and Pokemon (with a dash of tongue-in-cheek humor thrown in for good measure).

Urban Dead is a fantastic and superbly original MMOG that was created by Kevan Davis. To put it simply: it is a text-based zombie survival game that runs in any browser. Even if this sort of game isn't usually your thing, I'd thoroughly encourage you to give it a go, as it's an extremely original and absorbing experience.

Yohoho! Puzzle Pirates is a massively multiplayer online game world in which players take to the high seas to compete for pirate booty all the while playing addictive casual games! Sounds like a blast, and it is! So, climb aboard and see what all the fuss is about, and play free! =)

Here is a unique opportunity to get started with a brand new game just entering an open beta stage. The name of the game is llor.nu, which is also its Web address, except I'm not sure if that should be pronounced "LORE-new" or "un-ROLL" as the name implies.

As I enter Guano Junction inside the Bat Hole, I check my equipment. Chef's hat? Check. Rubber axe? Check. Frilly skirt? Check. Dirty hobo gloves? Check. Pine-Fresh air freshener? Check (well, one can never be too careful). I am ready for anything.

Avoid suspicion. Lie to your friends. Eliminate your enemies. Cry Wolf is a multiplayer Web game created to promote a movie of the same name coming to theaters this September. And if the movie is executed as well as the game has been, it will likely be a hit at the box office.