Do you know a fun mmorpg brower game?

FusionFall

zOMG

Neopets

Adventure Quest Worlds

Evony

Dark Orbit

Sherwood Dungeon

Tribal Wars

Club Penguins

You should try e-Sim! It's a massively multiplayer online strategy game set in a mirror world where you can join in local and national politics, set economic policies, start businesses and wage wars with other countries!

I highly suggest you use this link to create an account. Bonuses are awarded later on by using a referral link; http://e-sim.org/lan.35961/

Realm of the mad God runs in the chrome browser, not nearly as in depth as Runescape however, more along the lines of quick and fun

in my view, I think Pockie Ninja is one good choice

Pockie Ninja http://gamelist.bbgsite.com/goto/pockie-ninja.shtm...

Pockie Ninja is an anime-based browser game that features "One character, multi-classes", which changes the traditional notion that "one character can only play one class". In this game, you can choose from hundreds of cartoon characters, exclusive class and hidden skill.

try runescape you might like it

Not Browser, but maplestory is good.

http://www.aq.com/

it sucks but thats the best you got that's free