What is your favorite free Web game?

Hmmm...that is a good question. I play a number of games online when I have time but most of them cost money. Fortunately, I am decent enough at one or two of them to make money. I play at least 2-3 games a day and sometimes more if I have time. I usually enter money tournaments and can usually get more than I put in if I place in the top ten. But the site i play on you can also play for free (without the chance to win money) so I guess these games can qualify for your question. My favorite game there: Zuma. About one month ago, I started playing Desktop Tower of Defense. This became quite addicting because some friends and relatives created our own group for tracking high scores online. We kept playing 5-10 games a night trying to beat each other's high scores. It's a very fun but addicting game!

You might wanna check out my online RPG (text based); http://www.revampedblood.com/login.php

i love kingdom of loathing! best stick figure game ever.