http://bomomo.com/
Try this drawing game to play with moving lines and shapes!
http://livebinders.com/play/play_or_edit/2266
There are tons of online art games on this website. Just click on the tabs near the top of the web page.
http://www.kids.albrightknox.org/
http://www.getty.edu/gettygames/
Getty Museum art games
http://www.princetonol.com/groups/iad/links/artgames.html
Incredible Art games are on this website. Click on the links to play.
http://www.crayola.com/gamesfun/index.cfm?n_id=2
Play Crayola art games here.
http://www.quia.com/shared/art/
Art quizzes and more
http://www.artsology.com/games.php
http://www.cosmeo.com/bysubject.cfm?art
Discovery Channel art games