BEST.
ONLINE.
MMORPG.
EVER.
Absolutely free, -NO COST AT ALL- No ads, Over a million players, new content every tuesday, chat pane, pop-culture references in almost every encounter, WHAT MORE COULD YOU WANT?
Sure, it's a stick-figure text game, but I guarantee that once you get into the game, it'll be hard to stop.
Hope to see you there!