What is a really good FREE rpg type game I can play on the web

Can anyone tell me a really good RPG, I can play for free on the web. Somthing similar to WOW, or The Fellowship on facebook. I just dont want to have to pay for extra weapons or time, or armour. I want the whole thing to be free. Is there anything like that out there. Doesnt need fancy graphics, just pictures and numbers are fine. My imagination can do the rest.

I have not played it due to owning a Mac and not a PC but Free Realms is meant to be very good. Away from that I would reccomend Guild Wars, however I think both these games are both graphic heavy.

Guild Wars!!!

if im ever short on cash i always play guild wars. no monthly. still a good game to keep you occupied. its not as immurse as WoW but its similar enough.