If you like the idea of becoming a hero or building an empire while interacting with people around the world, but want to play for free, these two games might be for you.
Travian – start as the chief of a small village and end up building a wonder of the world.
Or start as a raider and become a civilisation builder with Civony.
Development and server time is funded by in-game gold purchases, but you can manage perfectly well without buying gold.
Both games have had good reviews. Enjoy!
As for me and my house, we will stick with World of Warcraft!
Update. I forgot about Last Chaos, which is probably the biggest of the free MMORPGs (massivley multi-player online role-playing games). Again, I haven’t played it, but it looks great.