Originally Posted by Eric

www.runesofmagic.com

You can kill and take players loot. Each player can protect a certain number of items on them, but you can still get some pretty good items off them. You can play the side of Player killer or Player Hunter. Dual Class system makes the number of class possiblities pretty cool.

Nice little game for a freebie.

Some other freebies I have found to be pretty fun:

www.tribalwars.net
www.kingsage.com
www.tanoth.com
www.evony.com
www.runescape.com
www.fallensword.com

Enjoy!