Some good online avatar based games are Zwinky, Fantage and Second Life. Another good online avatar based game is Habbo.
barney and bob the builder
At the website addictinggames.com you can find avatar games for free. Go to the website and search for avatar. Then pick one that looks fun and play it!
www.Weeworld.com is very fun try it.
Gaia online is one...
There are many websites you can go to, to find out about online avatar games. You can just search the web and it will take you to several avatar games online, and some of the websites allow you to create your own avatar in 3-D.
Some games that give you avatar rewards include Splosion Man and the Halo add-on, Halo Waypoint.
poptropica
Well theirs clubpenguin, YoVille, FarmVille......... that's all i got.
Club Penqiun IMVU
Nintendo Wii!
you can buy anything
meez
club penguin moshi monsters