The Campaign for a Commercial-Free Childhood is a national coalition of health care professionals, educators, advocacy groups and concerned parents who counter the harmful effects of marketing to children through action, advocacy, education, research, and collaboration. CCFC is headquartered at the Judge Baker Children's Center in Boston. www.commercialfreechildhood.org/.
The following link will take you to three examples of games, available to children through Nickelodeon's web site, that are very inappropriate for children.
http://www.commercialfreechildhood.org/actions/nicknaughtygames.html