A Great Online MMORPG
realmofthemadgod.com is great you can create a free account level up and play with friends. It is a diamond in the rough if you ask me and it works fine with firefox (no surprise there), and it is completly free. Graphics are too heavy for those of you running a box from < 2007 or one with no graphics card or a low quality one. It is awesome so give it a try.