Free, fun game?

[SashaFierce]

Know of any?

Tomorrow is my last day of finals so I have a couple weeks off and need something entertaining to pass the time.

[Jace Solo]

If you're looking for another mud, try CLOK. It's pretty awesome. Small community but active GM's who actually listen and develop based on the players matched with their vision. The community has great RP too. Skill based so what you spend time in is what you level, etc.

[Methais]

Vindictus is a pretty good F2P MMO. It's been forever since I played it but it rocked the house.

[Whirlin]

I enjoyed Path of Exile (Diablo clone) for a while... available through Steam.

For a more MMO... I always recommend TERA. While it becomes a bit grindy, and capping a character takes forever, the combat system is the best I've ever seen in an MMO, and keeps it interesting.

[Johnny Five]

Just get steam, hit the free to play section. Enjoy.

[Rimalon]

League of Legends?

[Velfi]

Tales of Maj'Eyal (http://te4.org/) and Dungeon Crawl Stone Soup (http://crawl.develz.org/wordpress/) are both fun, free, and very actively developed roguelikes. They both have very nice tilesets as well.

ADOM (http://www.ancardia.com/) is actually seeing development again after a decade or more or however long it was and it's always great too, though I don't think tiles are in yet. If you can handle being a @ and fighting some g's and o's and things of that nature then it should be rad.