Values at Play
http://www.valuesatplay.org/ is a website that claims, "Technology has the power to transform human behavior and shape institutions." A new breed of brainwashing...
They seek to build games that promote "values" of "equity, creativity, [and] diversity."
Unfortunately, they are in the "research" phase and do not, as of yet, have any games available online for play or demo.
Play Attention!
Another educational game, Play Attention, helps kids with ADD. Check out this article: http://www.lockergnome.com/nexus/game/2005/08/26/some-video-games-have-a-positive-side/
And this website: http://www.playattention.com/
Soon, your son or daughter will be beating YOU at chess!
Digital Praise
Finally, perhaps the most interesting and tailored example, is Digital Praise, a "Christian Computer Game" company, who seeks to "...glorify God through the development of software for children, teenagers, and families that spreads the Gospel of Jesus Christ..."
http://www.digitalpraise.com/flash.php
Yes! Veggie Tales DANCE DANCE DANCE!!! I can't wait for WOW! Worship Guitar Hero!
Some examples....
Adventures in Odyssey
Screenshot from game "Adventures in Odyssey"
Eternal Wars
"In the Chirstian computer game Eternal Wars by TwoGuysSoftware, you play Mike, a guardian angel sent by God to save troubled teen John Cornado from his inner demons."
Source: http://jscms.jrn.columbia.edu/cns/2005-03-01/lemer-religiousgames/